od
od — verb
- ODpresent simple I / you / we / they
- OD’she / she / it
- OD’dpast simple
- OD’ing-ing form
- ods3rd person singular
- oddedpast participle
1. to use a drug or medicine in such a large amount that it seriously harms you or
to use a drug or medicine in such a large amount that it seriously harms you or can kill you
Noor nearly od'd on pain pills after taking two doses together.
pattern: od on + drug or medicine
The actor od'd in his apartment before the ambulance arrived.
A college student od'd on strong pills at an off-campus party.
Christopher called an ambulance when his cousin started to od in the bathroom.
Doctors said Emma did not mean to od on the sleeping tablets.
- overdose
the full and more neutral verb
- overmedicate
often used when the substance is prescribed medicine
- take too much
plain everyday wording without the slang tone
文法句型
od on + drug or medicine
用法筆記
Usually followed by on plus the drug or medicine. Distinguish from verb/2, which is an informal joke about eating or drinking too much rather than a medical emergency.
常見錯誤
2. to eat or drink far more than is good for you, often in a half-joking way
to eat or drink far more than is good for you, often in a half-joking way
Liam od'd on fried chicken at the wedding buffet and skipped breakfast the next morning.
pattern: od on + food noun
After the holiday weekend, Rohan said he had od'd on sweets.
By midnight, the kids had od'd on chips and cola all evening.
Noor felt sick because she had od'd on spicy noodles.
During exam week, Pim joked, 'I might od on coffee before Friday.'
- overdo it
broader and can refer to any activity, not just eating or drinking
- overindulge
more formal and often used in writing
- binge
suggests heavy, repeated eating or drinking
- cut back
to reduce how much you eat or drink
文法句型
od on + food or drink
用法筆記
Very informal and often said jokingly. It is usually followed by on and is most natural with food or drink, unlike verb/1, which describes a dangerous drug event.
常見錯誤
od — noun
- odsingular
- odsplural
1. a case where someone takes so much of a drug that they are badly harmed or die
a case where someone takes so much of a drug that they are badly harmed or die
Police found empty pill packets after the teenager's od in the park.
informal noun: an od
The hospital treated three people for an od after the concert.
pattern: treat somebody for an od
Reporters described Dahlia's accidental od on prescription painkillers as a tragic warning to other students.
Ilan called his brother when he heard about Amani's od.
Folake's neighbour survived an od last winter only because paramedics arrived within minutes.
- overdose
the full and standard noun
- drug poisoning
more formal and common in medical or legal writing
- toxic dose
focuses on the dangerous amount itself
用法筆記
Informal short form of overdose, especially in speech, headlines, or police reports. Often appears after have, die from, survive, or treat somebody for. Distinguish from noun/2, which is a specialist science abbreviation unrelated to drugs.
常見錯誤
2. in science labs, a number that shows how much light a liquid, gel, or filter blo
in science labs, a number that shows how much light a liquid, gel, or filter blocks; a higher reading means less light gets through the sample.
The lab manual told Ishaan to record the od of each bacterial culture every thirty minutes.
od of + sample (lab measurement)
An od reading of 0.6 told the students that the yeast was growing well in the flask.
noun phrase: an od reading of + number
Higher od values mean the dye is blocking more light from reaching the sensor.
Emre noticed that the sample's od dropped sharply after the cells settled at the bottom of the tube.
- absorbance
more technical; preferred in modern chemistry and biology reports
- optical density
the full term; used the first time in formal writing
文法句型
od of + sample
od reading
用法筆記
Specialist term in biology and chemistry; outside the lab, learners are far more likely to meet noun/1. Usually written OD in lab reports and expanded to 'optical density' the first time it appears.