contact inhibition: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “contact inhibition” mean?
A biological process where the growth and division of cells slows or stops when cells touch each other.
Audio
Pronunciation
Definition
Meaning and Definition
A biological process where the growth and division of cells slows or stops when cells touch each other.
In cell biology and oncology, the phenomenon where normal cells stop proliferating upon reaching confluence (forming a monolayer), a key mechanism preventing uncontrolled growth. Loss of contact inhibition is a hallmark of cancer cells.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Standard UK English may hyphenate less frequently ('contact inhibition'), while US English may be more likely to accept 'contact-inhibition' in some contexts, though the open form is standard in both.
Connotations
Identical technical connotations in both varieties.
Frequency
Extremely low frequency in general discourse but standard and high-frequency within its specific scientific domain globally.
Grammar
How to Use “contact inhibition” in a Sentence
N of N (contact inhibition of growth)V (exhibit/display/show) + NAdj + N (defective contact inhibition)loss of + NVocabulary
Collocations
Examples
Examples of “contact inhibition” in a Sentence
verb
British English
- The normal cells undergo contact inhibition.
American English
- Cancerous cells often fail to contact inhibit.
adjective
British English
- Researchers observed a contact-inhibition response.
American English
- The contact inhibition mechanism was studied.
Usage
Meaning in Context
Business
Not used.
Academic
Primarily in life sciences research papers, textbooks, and lectures on cell biology, cancer research, and tissue engineering.
Everyday
Virtually never used.
Technical
Core terminology in cell culture labs, oncology, and biomedical research.
Vocabulary
Synonyms of “contact inhibition”
Neutral
Weak
Vocabulary
Antonyms of “contact inhibition”
Watch out
Common Mistakes When Using “contact inhibition”
- Using it as a verb (e.g., 'The cells contact inhibit' is non-standard; prefer 'The cells exhibit contact inhibition').
- Confusing it with 'anchorage dependence' (needing a surface to grow on). Contact inhibition is about cell-cell contact, not cell-substrate attachment.
- Misspelling as 'contact inhabitation'.
FAQ
Frequently Asked Questions
No. Contact inhibition is a reversible arrest of the cell cycle (cells stop dividing). Apoptosis is an active process of cell death. They are distinct mechanisms.
In strict technical writing, it is primarily a noun phrase (e.g., 'cells exhibit contact inhibition'). The back-formation 'to contact inhibit' is sometimes seen in informal scientific speech but is less preferred in formal writing.
It is a fundamental concept in Cell Biology and is critically important in Cancer Research/Oncology, as its loss is a key step in carcinogenesis.
Yes, two main types are often distinguished: 'contact inhibition of proliferation' (stopping division) and 'contact inhibition of locomotion' (stopping movement upon collision).
A biological process where the growth and division of cells slows or stops when cells touch each other.
Contact inhibition is usually technical/scientific in register.
Contact inhibition: in British English it is pronounced /ˈkɒn.tækt ˌɪn.ɪˈbɪʃ.ən/, and in American English it is pronounced /ˈkɑːn.tækt ˌɪn.ɪˈbɪʃ.ən/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of cells in a petri dish behaving like people in a crowded lift: once they are all touching, they stop moving and multiplying.
Conceptual Metaphor
CROWD CONTROL FOR CELLS: Cells are like individuals in a space; when the space becomes crowded (contact), a stop signal (inhibition) is issued.
Practice
Quiz
What does 'contact inhibition' primarily describe?