prophylactic: meaning, definition, pronunciation and examples
C1/C2Formal, medical/technical, sometimes euphemistic (for condom).
Quick answer
What does “prophylactic” mean?
Intended to prevent disease or another undesirable condition.
Audio
Pronunciation
Definition
Meaning and Definition
Intended to prevent disease or another undesirable condition.
Can refer to any measure or device used to prevent harm, infection, or pregnancy, often specifically a condom. In a broader figurative sense, something that acts as a precautionary measure.
Dialectal Variation
British vs American Usage
Differences
Both varieties understand all meanings. In the UK, the medical/technical sense is slightly more dominant in general writing. In the US, the euphemistic meaning (condom) is very common in informal contexts.
Connotations
Formal and clinical when used in its primary sense. Can sound old-fashioned or deliberately indirect when used to mean 'condom'.
Frequency
Medium-low frequency overall. More common in medical, public health, and academic contexts than in everyday speech.
Grammar
How to Use “prophylactic” in a Sentence
[ADJ] + prophylactic + [NOUN] (prophylactic treatment)[VERB] + as a prophylactic against + [NOUN] (used as a prophylactic against malaria)prophylactic + to + [VERB] (prophylactic to prevent infection)Vocabulary
Collocations
Examples
Examples of “prophylactic” in a Sentence
noun
British English
- The doctor prescribed a course of antibiotics as a prophylactic.
- Travellers to the region should consider taking a malaria prophylactic.
- (informal) He bought some prophylactics from the chemist.
American English
- The vaccine serves as an important prophylactic against the virus.
- Fluoride in water acts as a dental prophylactic.
- (informal) He needed to stop by the store for prophylactics.
Usage
Meaning in Context
Business
Rare. Might appear in risk management contexts: 'The contract included prophylactic clauses against data breaches.'
Academic
Common in medical, biological, and public health papers: 'The study assessed the prophylactic efficacy of the new drug.'
Everyday
Mostly in the euphemistic sense for a condom, or when discussing health precautions: 'He took a prophylactic dose of aspirin before the long flight.'
Technical
Standard terminology in medicine, dentistry, and epidemiology: 'Prophylactic mastectomy is an option for high-risk patients.'
Vocabulary
Synonyms of “prophylactic”
Vocabulary
Antonyms of “prophylactic”
Watch out
Common Mistakes When Using “prophylactic”
- Using it as a synonym for 'healthy' (e.g., 'prophylactic food'). It describes a *purpose*, not a state. Incorrect: 'She leads a prophylactic lifestyle.' Correct: 'She takes prophylactic measures for her health.'
- Misspelling as 'prophilactic' or 'propholactic'.
- Overusing the euphemistic meaning in formal contexts where clarity is needed.
FAQ
Frequently Asked Questions
Yes, it is formal and technical in its primary medical sense. Its informal use as a synonym for 'condom' is also quite common but can sound old-fashioned or deliberately vague.
They are largely synonymous. 'Prophylactic' is more formal, clinical, and specifically tied to disease/medical contexts. 'Preventive' is more general and can be used in any context (e.g., preventive maintenance, preventive war).
Yes, it is very commonly used as an adjective (e.g., prophylactic treatment, prophylactic measures).
Yes, but it's a euphemism. It is understood, but in most everyday situations, more direct terms like 'condom' are clearer. Using 'prophylactic' in this sense can sound clinical or dated.
Intended to prevent disease or another undesirable condition.
Prophylactic: in British English it is pronounced /ˌprɒf.ɪˈlæk.tɪk/, and in American English it is pronounced /ˌproʊ.fɪˈlæk.tɪk/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Prophylactic measure (a step taken to prevent something)”
Learning
Memory Aids
Mnemonic
Think of PROPHYLACTIC as PRO-PHYLAXIS-TIC. 'Phylaxis' is from Greek for 'protection' or 'guarding'. So, it's PRO-protection.
Conceptual Metaphor
A SHIELD or BARRIER against disease/harm.
Practice
Quiz
In which context is the word 'prophylactic' LEAST likely to be used?