cytotoxicity
C2Technical/Scientific
Definition
Meaning
The quality of being toxic to cells.
The degree to which a substance (e.g., a drug, chemical, or immune cell) causes damage or death to cells; a measure of cell-killing potential.
Linguistics
Semantic Notes
Primarily used in biology, pharmacology, and medicine to quantify or describe the harmful effect of an agent on living cells. Often implies a measurable, specific biological effect rather than general poisoning.
Dialectal Variation
British vs American Usage
Differences
No significant spelling or usage differences. Pronunciations may differ slightly.
Connotations
Purely technical with identical connotations in both varieties.
Frequency
Equally rare in general discourse but standard in scientific fields in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
The cytotoxicity of [AGENT] was assessed.[AGENT] exhibited cytotoxicity against [CELL TYPE].Cytotoxicity was measured using [METHOD].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “N/A”
Usage
Context Usage
Business
Used in pharmaceutical/biotech R&D reports and investor briefings regarding drug safety profiles.
Academic
Core term in cell biology, immunology, pharmacology, and toxicology research papers and textbooks.
Everyday
Virtually never used in casual conversation.
Technical
Precise term in laboratory protocols, clinical trial data, and regulatory documents concerning drug or chemical safety.
Examples
By Part of Speech
verb
British English
- The compound was found to cytotoxicise the cultured neurons.
- Researchers sought to cytotoxicity the tumour line.
American English
- The treatment cytotoxicized the target cells effectively.
- They aimed to cytotoxicity the malignant cells.
adverb
British English
- The agent acted cytotoxicly against the pathogen.
- The response was measured cytotoxicly.
American English
- The compound functioned cytotoxicly in the assay.
- They evaluated the sample cytotoxicly.
adjective
British English
- The cytotoxic effect was dose-dependent.
- They observed cytotoxic activity in the sample.
American English
- The drug displayed a cytotoxic profile.
- Cytotoxic potential was a key finding.
Examples
By CEFR Level
- (Not applicable at this level.)
- (Not applicable at this level.)
- Scientists test new drugs for cytotoxicity to ensure they are safe.
- High cytotoxicity can be dangerous to healthy cells.
- The study compared the cytotoxicity of the two anticancer compounds using a standard MTT assay.
- A key concern in drug development is minimising off-target cytotoxicity while maximising therapeutic effect.
Learning
Memory Aids
Mnemonic
Think: CYTO (cell) + TOXIC (poison) + ITY (state of) = the state of being poisonous to cells.
Conceptual Metaphor
A cell-killing weapon (e.g., 'The drug's cytotoxicity targeted the tumour cells like a precision missile.').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with general 'токсичность' (toxicity). Cytotoxicity is specifically 'цитотоксичность' – toxicity directed at cells.
- Avoid literal translation as 'клеточная токсичность'; the established term is 'цитотоксичность'.
Common Mistakes
- Misspelling as 'cytotoxicitiy' or 'citotoxicity'.
- Using it as a synonym for general 'poisoning' or 'toxicity' outside a cellular context.
- Incorrect stress: stressing the 'tox' syllable instead of the 'sis' syllable (/...tɒkˈsɪs.../).
Practice
Quiz
In which field would you most likely encounter the term 'cytotoxicity' as a core concept?
FAQ
Frequently Asked Questions
Not necessarily. In contexts like cancer therapy or antimicrobial treatments, deliberate cytotoxicity against harmful cells (tumour cells, bacteria) is the desired therapeutic goal.
Cytotoxicity refers to causing cell death or damage. Genotoxicity refers specifically to causing damage to the genetic material (DNA) within a cell, which may lead to mutations or cancer, but doesn't necessarily kill the cell immediately.
It is typically measured in vitro using assays like MTT, LDH release, or trypan blue exclusion, which quantify cell viability, membrane integrity, or metabolic activity after exposure to a test substance.
Yes, it's possible. A substance might be highly toxic to specific cultured cells in a lab (high cytotoxicity) but be broken down or neutralised in a whole organism, resulting in lower overall systemic toxicity.