DictionaryAI

trans

TRANZ/tɹænz/

8 meanings of trans

Practice

  1. 1
    adjective
    Short for transgender (or transsexual), and often used as an umbrella term: having a gender identity that differs from the sex assigned at birth, including nonbinary and genderfluid people.

    The clinic offers care designed for trans patients of all ages.

    Several trans athletes testified at the hearing on the proposed ban.

    UsageBefore a noun (trans people, trans students) or after a verb: she's trans.

    Similartransgender

    Oppositecisgender, cis

    Note

    The Latin pair behind the chemist's cis and trans turns up here as well: trans, clipped from transgender or transsexual, stands opposite cisgender. It works before a noun, as in trans people, trans children or trans students, and after a verb, as in Shon Faye's 2018 headline beginning "I'm trans".

  2. 2
    adjective
    In chemistry, describing an isomer or arrangement in which two particular atoms or groups lie on opposite sides of a double bond or of a central metal atom.

    Partial hydrogenation turns some of the cis double bonds in vegetable oil into trans double bonds.

    Fumaric acid is the trans isomer of maleic acid.

    Oppositecis

    Note

    The word is Latin trāns, "on the other side of", and in chemistry it always works against cis, which puts the two specified atoms or groups on the same side. A double bond cannot rotate freely, so the arrangement is locked in, and it changes the molecule's shape and properties. The trans fats of partly hydrogenated oils are named for exactly these bonds.

    Checked 1 Nov 2026 · 6 facts

    • Chemical trans is borrowed from Latin trāns, meaning “on the other side of”. en.wiktionary.org
    • Chemical trans contrasts with cis. acdlabs.com
    • Cis describes specified atoms or groups on the same side of a reference plane; their size does not define the relationship. acdlabs.com
    • A carbon–carbon double bond cannot rotate freely: rotation requires breaking and re-forming its π bond. openstax.org
    • The cis/trans arrangement changes molecular shape and properties. chemed.chem.purdue.edu
    • Trans fats in partially hydrogenated oils are named for their trans double-bond configuration. fda.gov
  3. 3
    gearboxnounabbreviationclipping
    Short for transmission: the gearbox that carries power from a vehicle's engine to its wheels.

    Check the trans fluid before you decide the whole gearbox is shot.

    He rebuilt the trans himself over two weekends in the garage.

    Note

    Garage and car-forum talk uses it for the gearbox. It often stands before another noun, as in trans fluid: Gary S. Callison's 1998 advice for a gearbox that starts losing gears is to "first check the trans fluid level, then panic". Its plural, transes, is the one the transaction clipping uses too.

    Checked 1 Nov 2026 · 2 facts

  4. 4
    cell biologyadjective
    On or relating to the side of the Golgi apparatus farther from the endoplasmic reticulum.

    Newly made enzymes collect on the trans side of the Golgi before being sorted.

    Cargo is sorted in the trans Golgi network before it is shipped out.

    Oppositecis

    Note

    This is the shipping side of the Golgi. Material arrives at the opposite face, the one nearer the endoplasmic reticulum, is modified as it moves through the stack, and leaves from the trans side in vesicles bound for the cell surface, for lysosomes or for secretion. Cell biologists call the sorting zone on this face the trans Golgi network.

    Checked 1 Nov 2026 · 5 facts

Practice

Can you tell the meanings of trans apart? Answer 3 quick questions from this page, or write your own sentence and AI will check it.

Origins

Meanings 2, 4

English took trāns ("on the other side of") from Latin. Très is a doublet.

Meanings 1, 6

A shortening of transgender or transsexual, words that go back ultimately to Latin trāns.

Checked 1 Nov 2026 · 4 facts