confocal microscope: meaning, definition, pronunciation and examples
C2 (Very Low Frequency)Formal, Technical, Academic
Quick answer
What does “confocal microscope” mean?
A specialized optical microscope that uses point illumination and a pinhole to eliminate out-of-focus light, enabling high-resolution imaging of thick samples by optical sectioning.
Audio
Pronunciation
Definition
Meaning and Definition
A specialized optical microscope that uses point illumination and a pinhole to eliminate out-of-focus light, enabling high-resolution imaging of thick samples by optical sectioning.
In broader scientific discourse, it can refer to the technology and methodology of confocal microscopy, which includes various implementations (e.g., laser scanning, spinning disk) for three-dimensional, non-invasive imaging of biological specimens, materials, and surfaces.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. The compound noun is identical. Potential minor differences in associated terminology (e.g., 'lab' vs. 'laboratory').
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low frequency and confined to identical technical contexts in both regions.
Grammar
How to Use “confocal microscope” in a Sentence
The [scientist] used a confocal microscope to [verb: image, visualise, analyse] the [sample].Images were acquired using a [type] confocal microscope.[Sample] morphology was examined by confocal microscopy.Vocabulary
Collocations
Examples
Examples of “confocal microscope” in a Sentence
verb
British English
- The tissue was sectioned and then confocally imaged.
- We plan to confocal the sample series tomorrow.
American English
- The cells were confocally scanned for fluorescence.
- The lab technician will confocal the specimen this afternoon.
adverb
British English
- The sample was examined confocally.
- The data was acquired confocally using a 488nm laser.
American English
- The structure was visualized confocally.
- Images were captured confocally through a 63x objective.
adjective
British English
- The confocal imaging session lasted four hours.
- They published a paper on confocal microscopy techniques.
American English
- We need confocal image data to support the hypothesis.
- The confocal microscopy core facility is bookable online.
Usage
Meaning in Context
Business
Rare, except in specific contexts like marketing or sales for scientific equipment manufacturers.
Academic
Primary context. Used in life sciences, physics, materials science, and engineering research papers, theses, and lab reports.
Everyday
Virtually never used.
Technical
Exclusive and standard context. Central term in microscopy, histology, cell biology, and materials characterization.
Vocabulary
Synonyms of “confocal microscope”
Strong
Neutral
Weak
Vocabulary
Antonyms of “confocal microscope”
Watch out
Common Mistakes When Using “confocal microscope”
- Misspelling as 'con-focal' or 'confocul'.
- Using it as a general term for any advanced microscope.
- Incorrect stress: pronouncing it as 'CONfocal' instead of 'conFOcal'.
- Treating 'confocal' as a separable adjective from 'microscope' in general writing.
FAQ
Frequently Asked Questions
It means 'having the same focus', from 'con-' (together/same) and 'focal'. It refers to the alignment of the illumination and detection paths at a single point.
Yes, one of its key applications is live-cell imaging, as it can create 3D images of living, often fluorescently labelled, specimens over time with minimal out-of-focus blur.
No, they are fundamentally different. A confocal microscope uses focused laser light, while an electron microscope uses a beam of electrons. They have different resolution limits, sample preparation requirements, and applications.
Key limitations include photobleaching and phototoxicity (light can damage live samples), relatively slow imaging speed for some modalities, and high equipment cost and complexity compared to standard light microscopes.
A specialized optical microscope that uses point illumination and a pinhole to eliminate out-of-focus light, enabling high-resolution imaging of thick samples by optical sectioning.
Confocal microscope is usually formal, technical, academic in register.
Confocal microscope: in British English it is pronounced /ˌkɒnˈfəʊ.kəl ˈmaɪ.krə.skəʊp/, and in American English it is pronounced /ˌkɑːnˈfoʊ.kəl ˈmaɪ.krə.skoʊp/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine a microscope that focuses only on a CONfined FOCAL point, blocking all blurry light to create a perfectly clear image.
Conceptual Metaphor
A PRECISE FOCUS IS A PINHOLE; THREEDIMENSIONAL VISION IS OPTICAL SECTIONING.
Practice
Quiz
What is the primary advantage of a confocal microscope over a traditional widefield microscope?