test tube: meaning, definition, pronunciation and examples
B1Technical/Scientific (primary); General (in metaphorical/extended uses)
Quick answer
What does “test tube” mean?
A thin, cylindrical glass or plastic tube closed at one end, used in chemical and biological laboratories to hold, mix, or heat small quantities of liquid or solid substances.
Audio
Pronunciation
Definition
Meaning and Definition
A thin, cylindrical glass or plastic tube closed at one end, used in chemical and biological laboratories to hold, mix, or heat small quantities of liquid or solid substances.
Can metaphorically refer to something created or developed under controlled, artificial, or experimental conditions, especially in phrases like 'test-tube baby' (a child conceived by in vitro fertilisation).
Dialectal Variation
British vs American Usage
Differences
No significant difference in core meaning or usage. Spelling and pronunciation are consistent.
Connotations
Identical connotations of science, experimentation, and controlled conditions in both variants.
Frequency
Slightly higher frequency in American media due to greater commonality of the phrase 'test-tube baby' in public discourse historically.
Grammar
How to Use “test tube” in a Sentence
[Verb] + a/the test tube: heat, shake, fill, label, sterilise[Adjective] + test tube: glass, plastic, sterile, small, boilingtest tube + [Noun]: rack, holder, brush, baby, experimentVocabulary
Collocations
Examples
Examples of “test tube” in a Sentence
adjective
British English
- The test-tube experiment yielded unexpected results.
- They pioneered test-tube fertilisation techniques.
American English
- The test-tube analysis confirmed the hypothesis.
- It was a classic test-tube study design.
Usage
Meaning in Context
Business
Rare, except in biotech/pharma contexts discussing R&D processes.
Academic
Common in chemistry, biology, and medical texts and lab instructions.
Everyday
Understood, primarily in discussions of science, IVF, or metaphorically for anything artificial.
Technical
Standard, precise term for a specific piece of laboratory equipment.
Watch out
Common Mistakes When Using “test tube”
- Using 'test tube' as a verb (incorrect: 'He test tubed the solution.').
- Misspelling as one word 'testtube'.
- Confusing with a 'beaker' or 'flask' (which have different shapes and uses).
FAQ
Frequently Asked Questions
It is standardly written as two separate words: 'test tube'. It is hyphenated ('test-tube') only when used as a modifier before a noun (e.g., test-tube rack, test-tube baby).
A boiling tube is a larger, thicker-walled version of a test tube designed specifically for heating substances to high temperatures. A regular test tube is smaller and less robust.
No, 'test tube' is not used as a verb. You would use phrases like 'perform a test tube experiment' or 'conduct a test on' instead.
It is a common, though somewhat dated, term for a baby conceived through in vitro fertilisation (IVF), where an egg is fertilised by sperm outside the body in a laboratory dish (not literally a test tube).
A thin, cylindrical glass or plastic tube closed at one end, used in chemical and biological laboratories to hold, mix, or heat small quantities of liquid or solid substances.
Test tube is usually technical/scientific (primary); general (in metaphorical/extended uses) in register.
Test tube: in British English it is pronounced /ˈtɛst ˌtjuːb/, and in American English it is pronounced /ˈtɛst ˌtuːb/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “test-tube baby (a child conceived by in vitro fertilisation)”
- “a test-tube creation (something developed artificially in a lab)”
Learning
Memory Aids
Mnemonic
Think of a 'test' (experiment) needing a 'tube' (container). It's the tube you use for a test.
Conceptual Metaphor
THE LABORATORY IS THE ORIGIN OF ARTIFICIAL CREATION (e.g., 'test-tube baby', 'test-tube meat').
Practice
Quiz
What is the most accurate description of a 'test tube'?