antibiotic
B2Primarily medical and scientific, but commonly understood in everyday healthcare contexts.
Definition
Meaning
A substance, such as penicillin, that destroys or inhibits the growth of bacteria and is used to treat infections.
In broader ecological contexts, any substance produced by a microorganism that is antagonistic to other microorganisms; more recently, in fields like microbiology and evolutionary biology, also refers to the selective pressures such substances create.
Linguistics
Semantic Notes
Originally an adjective ('antibiotic substance'), now overwhelmingly used as a countable noun. Implies a substance derived from living organisms (or their synthetic analogs) as opposed to general antiseptics or disinfectants.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling and pronunciation are standard.
Connotations
Identical. Both associate the word with modern medicine, bacterial infections, and the issue of resistance.
Frequency
Equally frequent in both varieties due to global medical terminology.
Vocabulary
Collocations
Grammar
Valency Patterns
[Patient] was prescribed [antibiotic] for [infection][Doctor] recommended a [seven-day] course of [antibiotic][Overuse] of [antibiotic] leads to [resistance]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A silver bullet (for bacterial infections - conceptual, not direct)”
Usage
Context Usage
Business
Rare, except in pharmaceutical industry reports on drug development.
Academic
Frequent in medical, biological, and public health research papers.
Everyday
Common in discussions of health, doctor visits, and pharmacy instructions.
Technical
Precise usage in clinical guidelines, microbiology, and pharmacology.
Examples
By Part of Speech
verb
British English
- The vet will antibiotic the wound.
- They had to antibiotic the whole herd.
American English
- The doctor decided to antibiotic the infection aggressively.
- In rare cases, we may antibiotic prophylactically.
adverb
British English
- This compound acts antibioticly against staph.
- The treatment was designed antibioticly.
American English
- The new drug functions antibioticly in a novel way.
- The agent was applied antibioticly.
adjective
British English
- The antibiotic properties of the mould were discovered by Fleming.
- We are studying antibiotic resistance in the community.
American English
- She applied an antibiotic ointment to the cut.
- The soil sample showed high antibiotic activity.
Examples
By CEFR Level
- The doctor gave me antibiotics for my sore throat.
- You must take all the antibiotics.
- If you have a bacterial infection, you might need antibiotics.
- It's important not to stop your antibiotics early.
- The overprescription of antibiotics is a major public health concern.
- This is a broad-spectrum antibiotic effective against a wide range of bacteria.
- The evolution of antibiotic resistance poses a grave threat to modern medicine.
- Researchers are delving into soil microbiomes to discover novel antibiotic compounds.
Learning
Memory Aids
Mnemonic
ANTI (against) + BIO (life) + TIC. Think: 'A substance against microscopic life (bacteria).'
Conceptual Metaphor
Medicine is a weapon (e.g., 'fighting infection with antibiotics').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'антибиотик' - it's a direct cognate with identical meaning, so no trap.
Common Mistakes
- Using 'antibiotics' for viral infections (e.g., flu).
- Saying 'I need an antibiotic' instead of 'I was prescribed an antibiotic'.
- Using it as an uncountable noun (e.g., 'take antibiotic').
Practice
Quiz
What is a primary public health concern associated with antibiotics?
FAQ
Frequently Asked Questions
No, antibiotics are only effective against bacterial infections. Using them for viral illnesses is ineffective and contributes to antibiotic resistance.
Finishing the course ensures all the bacteria are killed, preventing survivors from developing resistance and causing a relapse.
It is the ability of bacteria to survive and multiply despite the presence of an antibiotic designed to kill them, often due to genetic mutations or overexposure to the drug.
Yes, there are many classes (e.g., penicillins, tetracyclines, macrolides) that work in different ways to kill or inhibit various groups of bacteria.
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Health and Wellness
B1 · 49 words · Physical and mental health vocabulary.
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