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dose

SayDOHS/doʊs/UK/dəʊs/

Pluraldoses

Verbdoses, dosing, dosed

12 meanings of dose

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  1. 1
    nouncountable
    A measured amount of medicine meant to be taken at one time.

    The label warned against taking more than one dose within six hours.

    Nurses recorded each dose the patient received throughout the night.

    Similardosage, measure, portion

    Note

    Medicine is where the word began. Greek dósis, literally "a giving," from dídōmi "to give," was Galen's term for an amount of medicine. Keep it apart from dosage. A dose is the single portion, such as one 500 mg tablet. The dosage is the whole schedule: how much, how often, for how long. "A single dose" and "the correct dosage" are not interchangeable.

  2. 2
    nouncountable
    The amount of a substance, agent, or radiation taken in or received at one time.

    Technicians calculated the radiation dose each patient absorbed during the scan.

    The dose of caffeine in a single cup of coffee varies by brew.

    Similaramount, quantity, dosage, measure

    Note

    The medical sense widened here into a measure of exposure. What counts is what a body takes in, whether anyone meant to give it or not. The manganese that nineteenth-century miners breathed from ore, described by The Economist in 2014, is a dose in this sense. The agent need not even be active, and radiation fits as easily as a drug.

  3. 3
    verbtransitive
    To give a measured amount of medicine to a person or animal.

    Veterinarians dose horses according to body weight.

    The pharmacist showed her how to dose the child safely.

    Similarmedicate, treat

    Note

    The verb takes the patient as its object and introduces the medicine with "with." George Meredith writes in The Adventures of Harry Richmond (1871), "I have dosed her with an opiate." That pattern, someone dosed with something, separates it from the prescribing verb, which stands without an object, as when physicians dose by weight.

  4. 4
    nounfigurativelycountable
    A generous measure or extended experience of something.

    His speech delivered a heavy dose of reality to the new recruits.

    We got a full dose of city life during our stay.

    Similarmeasure, helping, taste, portion

    Note

    The medical measure stretched to cover experience at large, still keeping the idea of something taken in by the amount. In The Heart of Darkness (1899), Conrad's narrator calls six years in Eastern seas "a regular dose of the East." The familiar modern phrase is a dose of reality. It stands close to the disagreeable-medicine sense, but here the stress falls on how much was taken, not on how unpleasant it was.

  5. 5
    verbintransitive
    To work out and prescribe the correct amount of a medicine.

    Physicians dose according to age, weight, and kidney function.

    It can be hard to dose accurately when patient records are incomplete.

    Similarprescribe

  6. 6
    verbtransitive
    To secretly give an unwilling person a drug that leaves them helpless.

    The bartender noticed a man attempting to dose a customer's glass.

    She feared that someone had tried to dose her during the night.

    Similardrug, spike, dope

    Note

    A darker use of the same verb, for drugging someone in secret. The object can be the person or the drink. Pamela Donovan's Drink Spiking and Predatory Drugging (2016) recounts a confession that one man "had dosed" a victim's drink, in a case involving chloral hydrate. Roofie is the slang equivalent. Dose sounds plainer and suits a factual account.

  7. 7
    nouncolloquialIrelandcountable
    A common cold: a viral illness of the nasal passages, sometimes accompanied by fever.

    She caught a dose that left her sniffling for a week.

    A bad dose kept him in bed with a fever for days.

    Similarcold, bug, chill

    Note

    Irish speech uses it, colloquially, for an ordinary cold, as in "There's a dose going round." The same noun once meant a venereal infection, so a listener unfamiliar with the Irish use may hear the wrong thing. Context and the casual "going round" usually settle it.

Practice

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Origin

Borrowed from Middle French dose, from Late Latin dosis, from Ancient Greek δόσις (dósis, "a portion prescribed," literally "a giving"), used by Galen and other Greek physicians for an amount of medicine, ultimately from δίδωμι (dídōmi, "to give").