What does dose mean?
A dose is a carefully measured amount of a medicine, drug, or other substance that is taken or administered at one time — for example, a single tablet, spoonful, or injection. The word also extends beyond medicine into figurative territory: people speak of getting 'a dose of reality,' receiving 'a healthy dose of criticism,' or needing 'a daily dose of exercise,' meaning a certain quantity of something, often unwelcome but unavoidable. As a verb, to dose someone is to give them a measured amount of medicine, though it can sound slightly clinical or even suspicious when used of secretly adding something to food or drink. Derived from Greek through Latin, the word literally relates to the act of giving. Dose appears constantly in medical writing, public health guidance, and journalism, making it an essential term for discussing health, treatment, and proportionate experience.
A measured quantity of a medicine, drug, or other substance taken or administered at one time.
"Each dose contains 500 milligrams of paracetamol."
In pharmacology, 'dose' refers specifically to the single amount given, distinct from 'dosage,' which denotes the overall schedule.
To administer a dose of medicine or a drug to someone or something.
"The nurse dosed the patient with painkillers every six hours."
Can imply careful therapeutic administration, but may also suggest covertly drugging someone, depending on context.
Standard regular plural; used when referring to multiple individual administrations of a substance.
"The course requires three doses spread across two weeks."
Every time you take your medicine, you're speaking Greek: 'dose' comes from the Greek word for 'giving.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dose
The word 'dose' derives from the Greek 'dosis,' meaning 'a giving' or 'a portion given,' formed from the verb 'didonai,' meaning 'to give.' It passed into Latin as 'dosis' before entering English in the late Middle Ages via medical Latin. Cognates sharing this root include 'anecdote' (literally 'things given out'), 'donate,' and 'data' — all ultimately tracing back to the same Indo-European root *do-, 'to give.'
Related word forms
How dose is actually used
Common in both medical and everyday registers. In medical contexts, 'dose' and 'dosage' are used precisely and are not interchangeable. Figurative use ('a dose of reality', 'a daily dose of') is idiomatic and frequent in informal speech and journalism. As a verb, 'to dose' can carry a slightly clinical or even sinister connotation depending on context (e.g., 'he dosed her drink').
Easily confused with dose
'Dose' refers to the specific quantity taken at one time, while 'dosage' refers to the regimen or rate at which a medicine is given over time (e.g., dosage instructions).
'Doves' is the plural of the bird and rhymes with 'loves,' whereas 'dose' is pronounced with a long 'o' — they are sometimes confused in spelling or by non-native speakers.