secondary
Noun pluralsecondaries
Pluralsecondaries
- 1Coming next after the first or primary; of second place in order, origin, or rank.
We took the secondary route to avoid traffic on the main road.
In the company hierarchy, his secondary role supported the lead manager.
Similarsubordinate, subsidiary, lesser, minor, auxiliary
Oppositeprimary, main, principal, chief
Note
The core meaning of the whole word comes from Middle English secundarie, from Latin secundārius, "of the second class or quality." That is built on secundus, the same word that gives English second. The pairing with primary runs through nearly every technical use that follows, from the chemist's term to the transformer coil. So the word usually implies a first thing that it stands behind.
- 2Having less than primary importance; minor or subordinate compared with what matters most.
Profit remained a secondary consideration behind the company's mission.
For now, decorating the office is a secondary priority.
Similarminor, lesser, subordinate, subsidiary, peripheral
Oppositeprimary, main, principal, chief
Note
The everyday sense of rank by importance is also the one that bends grammar. The word is usually treated as absolute, yet in practice it takes degrees. Deborah Bernstein's Pioneers and Homemakers (1992) says sexual equality became "even more secondary than before." More secondary and most secondary are available when the point is a slide down a scale of priority.
- 3Relating to education for students between roughly 11 and 18 years of age.
Many secondary students choose elective subjects in their final years.
He teaches science at a large secondary school.
Note
The middle rung of a three-step ladder: primary, secondary, tertiary. It names the stage between the early school years and university or college. It occurs mostly in fixed pairings such as secondary school, secondary education, and secondary teacher. The school itself can also be called a secondary, with no noun needed.
- 4A school providing education for students roughly between 11 and 18 years of age.
He taught for thirty years at a rural secondary.
The new secondary opened with room for a thousand students.
Note
The school noun is a clipping of secondary school, and it forms its plural regularly, as in four secondaries in one district. It covers the same years as the educational adjective. In most contexts it stands in for the full phrase without any change of meaning.
- 5Of a color, formed by mixing two primary colors.
Painters mix red and yellow to make a secondary orange.
The chart grouped every secondary color beside its parent primaries.
Note
Yellow is a secondary color in light but a primary one in CMYK ink. What counts as secondary depends on which colors a system starts from as primaries. Mixing light and mixing pigment begin from different primaries, so the same hue can fall on either side of the line. The bare noun a secondary is the shortened form of the phrase.
- 6Something of lesser importance than the main or primary thing.
In planning the trip, sightseeing was the priority and shopping a mere secondary.
Every other concern became a secondary once the deadline loomed.
Similarafterthought
Oppositepriority
- 7Ellipsis of secondary colour.
Artists often dull a secondary by adding a touch of its complement.
Purple is the secondary you get from red and blue.
Note
A color-wheel shorthand: the adjective drops its noun and stands for the whole phrase secondary color, one of the three hues made by mixing two primaries. It takes the regular plural secondaries, and it reads most naturally where color is already the subject, as in the primaries and secondaries of a palette. Elsewhere, write out the full phrase, or the reader may hear anything of lesser importance instead.
- 8Concerned with turning raw materials into finished products.
The country's secondary industries expanded as factories multiplied.
Workers shifted from farming into secondary manufacturing jobs.
Note
Economists' three-sector model puts manufacturing in the middle. The primary sector extracts raw materials, the secondary turns them into goods, and the tertiary provides services. The word appears mostly in fixed phrases such as secondary industry and the secondary sector. Do not read it as "minor" here: a country's secondary sector may well be its largest.
- 9Of a condition, arising as a consequence of another disease, or occurring in its second stage.
Patients with diabetes may develop secondary complications affecting the eyes.
The rash signaled the secondary stage of the infection.
Oppositeidiopathic
Note
In clinical writing it usually takes to, and the cause follows the preposition: Bright's disease is often secondary to scarlet fever. Its other use marks a stage rather than a cause, as in the secondary symptoms of syphilis. A pointed antonym is idiopathic, the word for a condition that arises on its own with no prior disease behind it.
Bright's disease is often secondary to scarlet fever.
The patient's kidney damage was judged secondary to long-standing diabetes.
- 10Derived from someone acting as a deputy, or from a person or body to whom authority has been delegated.
The committee held secondary authority delegated by the full council.
The regulations carry only secondary force, derived from the minister's delegated powers.
Similarderived, derivative, subordinate
Note
Here the stress falls on who produced something, not on where it ranks. "The work of secondary hands" is work done by assistants or agents rather than by the principal. The word marks something as derived, at one remove from its true author or authority. Its human counterpart is the deputy, the secondary whose hands those are.
- 11A person who holds a subordinate or auxiliary position; a deputy or delegate.
The cathedral employed a secondary to assist the senior clergy.
Each officer trained a secondary to take over in an emergency.
Similardeputy, assistant, subordinate, understudy
Note
The word once named real offices: the secondary, or undersheriff, of the city of London was a formal post. Shakespeare uses it in Measure for Measure (c. 1603–1604): "Old Escalus […] is thy secondary." There it means second in command, the one who acts when the principal does not. The adjective for what such a deputy produces is the "delegated" meaning.
- 12An inductive coil or loop powered magnetically by a primary coil in a transformer or similar device.
Engineers wound the secondary with more turns to step up the voltage.
A short circuit in the secondary can damage the whole transformer.
Note
The output side of a transformer. Current in the primary sets up a magnetic field, and the secondary draws energy from that field by induction rather than through a wired connection. The ratio of its turns to the primary's fixes the output voltage. More turns step the voltage up, and fewer step it down.
- 13An issue of additional stock by a corporation whose shares are already publicly traded.
The airline announced a secondary to fund its expansion into new markets.
Analysts expected the secondary to dilute existing shareholders' stakes.
Note
Bankers speak of a secondary, or a secondary offering, when a company that has already gone public issues new shares. It comes after the initial public offering, raises fresh capital, and dilutes existing holders. It is easily confused with the secondary market, where investors trade shares that already exist and the company itself raises nothing.
- 14The defensive backs of a football team, considered as a unit.
Injuries left the Roughriders' secondary thin heading into the Grey Cup.
A veteran safety anchored the team's secondary all season.
Note
A collective noun for the last line of a football defense: the cornerbacks and safeties, plus nickel and dime backs in some schemes. Their job is pass coverage. The term is shared by the American and Canadian games. It almost always appears with a determiner and as a single unit: the secondary, a team's secondary, an injury-thinned secondary.
- 15Representing a reversion to a condition possessed by an evolutionary ancestor.
Researchers interpreted the simplified shell as a secondary feature rather than a primitive one.
The cave fish's blindness is secondary, evolved long after its sighted ancestors.
Similarderived
Oppositeprimitive
Note
Systematists use it for a trait that has returned to an ancestral state, not one kept unbroken from the start. Wayne M. Matthis and Luciane Marinoni, revising Ephydrini in 2016, note a "secondary loss" of prolegs in Dimecoenia. The prolegs were present in the lineage and then lost again. The adverb does the same work: a structure can be secondarily lost.
- 16Formed by alteration or by deposition occurring after the original rock mass took shape.
The vein contained secondary quartz precipitated from circulating groundwater.
Weathering produced a secondary mineral coating along the fracture surfaces.
Oppositeprimary
Note
A petrologist's word for what came later. It describes minerals laid down after the host rock formed, through weathering, recrystallization, or precipitation from fluids moving through it. Its opposite is primary: the minerals that crystallized when the rock itself was made. Quartz filling a vein or a crust lining a fracture is typically secondary.
- 17Developed through pressure or other causes acting on the rock after its original formation.
Tectonic stress imposed a secondary cleavage on the mudstone.
The deformation produced secondary structures unrelated to the original bedding.
Oppositeprimary
Note
The mineral sense is about material added later; this one is about shape imposed later. It covers cleavages, joints, and fabrics produced by tectonic stress, compaction, or other deformation after the rock hardened. Secondary cleavage is the standard phrase. Such features are laid over the rock's primary ones, like bedding, and often cut across them rather than following them.
- 18Derived from a parent compound by the replacement of two hydrogen atoms with organic radicals.
Oxidation of a secondary alcohol typically yields a ketone.
The amine in this drug is secondary, bearing two carbon substituents on nitrogen.
Note
Chemists use it of the carbon or nitrogen at the heart of a functional group. In a secondary alcohol or a secondary amine, that atom is bonded to two carbon-bearing groups where the parent compound had hydrogens. The label sorts compounds by how many hydrogens have been replaced, and that count goes a long way toward predicting how they react.
- 19The smaller member of a system of two orbiting bodies, circling the larger primary.
In the eclipsing binary, the secondary periodically dims the combined light.
The secondary completes one orbit every few days around the massive primary.
Similarcompanion
Note
Astronomers name the members of a bound pair by mass: the larger is the primary and the smaller the secondary. The terms apply whether the pair is a planet and its moon or two stars in a binary. Both bodies orbit a shared center of mass, though the primary dominates the motion.
- 20A flight feather attached to the ulna, the forearm bone, of a bird's wing.
The molting goose had dropped a secondary, leaving a gap in its wing.
Each secondary overlaps the next to form a smooth flight surface.
Note
Ornithologists count a wing's flight feathers in two sets: the primaries on the hand and the secondaries on the forearm. The secondaries lie nearer the body and form the inner trailing edge of the wing. They take their name from the joint they grow from.
- 21Relating to the second joint of a bird's wing.
The anatomist labeled the secondary segment of the wing skeleton.
Muscles controlling the secondary joint allow fine adjustments in flight.
Note
An anatomist's adjective for the middle of a bird's wing, the elbow region where the upper arm meets the forearm. The flight feathers called secondaries grow from this joint. That shared origin is why one word names both the bone region and the feathers anchored there.
- 22A great circle perpendicular to a primary circle and passing through its two poles.
The astronomer measured the star's position along a secondary drawn through the zenith.
Hour circles are secondaries passing through the celestial poles.
Note
A circle of spherical geometry drawn on the sky, set at right angles to a chosen great circle and passing through its poles. Hour circles are secondaries to the celestial equator, and vertical circles are secondaries to the horizon. Positions are measured along these circles, which is why the term matters to anyone reading celestial coordinates.
- 23The second stage of a multistage thermonuclear weapon, which generates a fusion explosion when imploded by the primary's fission blast, and which in some very large weapons in turn implodes a fusion tertiary.
The weapon's secondary delivered the bulk of its multi-megaton yield.
Radiation from the primary compresses the secondary to fusion conditions.
Note
In weapon design the stages are numbered by the order in which they fire. The fission primary goes off first. Its X-rays, channeled inside the casing in the Teller-Ulam configuration, compress and heat the secondary until it reaches fusion conditions. The secondary supplies most of the yield, and in the very largest devices it drives a tertiary in turn.
- 24A radar return produced when an aircraft's transponder replies to an interrogation signal, carrying encoded identity and situational data beyond what a primary return provides.
The display tagged each secondary with the aircraft's call sign and altitude.
Air traffic control relies on the secondary to identify planes beyond visual range.
Note
Short for a return from secondary surveillance radar. A primary return is simply the radio echo off the aircraft's skin. A secondary exists only because the transponder answers back, so it can carry identity and pressure altitude in coded Mode A, C, or S replies. An aircraft with its transponder off still produces a primary return but no secondary.
Showing meanings only.
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Origin
From Middle English secundarie, from Latin secundārius ("of the second class or quality"), formed from secundus (the source of English second) plus the suffix -ārius; it is equivalent to second + -ary, and compares with French secondaire, Italian secondario, and Spanish secundario.