cytophotometer
Very LowTechnical / Scientific
Definition
Meaning
A scientific instrument that measures the concentration or amount of specific substances in cells using light absorption.
A specialized piece of laboratory equipment, often a type of spectrophotometer or microscope, used in cell biology and histology to quantify chemical components (like DNA, proteins, or enzymes) within individual cells or cellular structures by analysing the intensity of light they absorb after staining.
Linguistics
Semantic Notes
This is a highly specific compound noun from the fields of cytology and analytical instrumentation. It implies a fusion of microscopic examination ('cyto-') and precise photometric measurement. It is not a general laboratory term but denotes a specific, often expensive, piece of equipment.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Potential minor differences in laboratory jargon or brand preferences.
Connotations
Identical connotations of precision, specialization, and advanced biomedical research.
Frequency
Equally rare and technical in both dialects, confined to professional and academic circles.
Vocabulary
Collocations
Grammar
Valency Patterns
The cytophotometer [verbed] the [sample/tissue] for [substance].Researchers used a cytophotometer to [measure/quantify/analyse] [something].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Extremely rare; might appear in procurement documents for biotech firms.
Academic
Standard term in cell biology, histopathology, and genetics research papers.
Everyday
Never used.
Technical
Core term in laboratories specialising in quantitative cytology, cancer research, and cytogenetics.
Examples
By Part of Speech
adjective
British English
- cytophotometric analysis
- cytophotometric data
American English
- cytophotometric reading
- cytophotometric technique
Examples
By CEFR Level
- The scientist looked at the cells through a powerful microscope attached to a cytophotometer.
- Quantitative analysis of nuclear DNA content was performed using a scanning cytophotometer.
- The lab acquired a new digital cytophotometer to automate their cell cycle research.
Learning
Memory Aids
Mnemonic
Think: CYTO (cell) + PHOTO (light) + METER (measurer) = a cell-light-measurer.
Conceptual Metaphor
A SCALE FOR CELLS (it 'weighs' the colour/light absorbed by cellular components).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'цитофлуориметр' (flow cytometer/fluorometer) which measures fluorescence in fluid suspension. 'Цитофотометр' is typically for static, slide-mounted cells.
Common Mistakes
- Misspelling as 'cytophometer' or 'cytophotmetre'.
- Confusing it with a general spectrophotometer, which analyses solutions, not individual cells.
Practice
Quiz
A cytophotometer is primarily used for:
FAQ
Frequently Asked Questions
No. While it often incorporates a microscope to visualise cells, its primary function is precise photometric measurement, not just observation.
Cytogenetics, cancer research (e.g., tumour ploidy analysis), cell biology, and histopathology.
Typically, no. Analysis is usually done on stained, fixed (dead) cells on a slide to get a stable light absorption reading.
Numerical data, often an optical density or absorbance value, quantifying the amount of a target substance per cell.