electrophoresis
C2Formal, Technical, Academic
Definition
Meaning
The movement of charged particles (such as proteins or DNA fragments) through a fluid or gel under the influence of an electric field, used as a method for separating and analyzing them.
Any technique, process, or phenomenon involving the migration of charged particles in a fluid medium when an electric field is applied. This term can also be applied metaphorically in some contexts to describe a guided or forced movement.
Linguistics
Semantic Notes
The word is primarily used in scientific contexts, especially chemistry, biochemistry, molecular biology, and medicine. It refers to both the physical phenomenon and the laboratory technique. While a noun, it can function attributively (e.g., electrophoresis gel).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is consistent. Pronunciation differs slightly (see IPA).
Connotations
Identical scientific connotations in both varieties.
Frequency
Equally low-frequency and specialized in both dialects, confined to scientific/technical registers.
Vocabulary
Collocations
Grammar
Valency Patterns
[They] used electrophoresis to separate [the proteins].Electrophoresis was performed on [the sample].[The DNA fragments] were analysed by electrophoresis.The principle of electrophoresis is key to [this method].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[No common idioms exist for this highly technical term.]”
Usage
Context Usage
Business
Virtually unused, except perhaps in biotech/pharma company reports discussing analytical methods.
Academic
Central term in life sciences and chemistry papers, lab reports, and textbooks.
Everyday
Extremely rare. Might be encountered in popular science articles or crime drama TV shows referencing DNA analysis.
Technical
The primary domain of use. Standard terminology in laboratory manuals, research protocols, and scientific discussions.
Examples
By Part of Speech
verb
British English
- The samples will be electrophoresed on an agarose gel overnight.
- After digesting the plasmid, we electrophoresed the fragments.
American English
- The proteins need to be electrophoresed under denaturing conditions.
- We electrophoresed the PCR products to check for amplification.
adverb
British English
- The band migrated electrophoretically towards the anode.
- The samples were separated electrophoretically.
American English
- The proteins were resolved electrophoretically.
- DNA fragments move electrophoretically through the gel matrix.
adjective
British English
- The electrophoretic mobility of the variant was significantly reduced.
- We obtained an electrophoresis-grade purity reagent.
American English
- The electrophoretic pattern was consistent with the diagnosis.
- An electrophoresis run time of 45 minutes was optimal.
Examples
By CEFR Level
- The scientist used a method called electrophoresis to look at the DNA.
- Electrophoresis helps separate different parts of a mixture using electricity.
- In the lab, we performed gel electrophoresis to analyse the proteins from the tissue sample.
- The results of the electrophoresis clearly showed two distinct bands, indicating a successful separation.
- Capillary electrophoresis offers superior resolution and faster analysis times compared to traditional slab-gel methods.
- The heterogeneity of the antibody preparation was confirmed by two-dimensional electrophoresis followed by mass spectrometry.
Learning
Memory Aids
Mnemonic
Think of ELECtricity making PROteins or DNA FLEE (like in 'exodus') across the gel – ELECTRIC-FLEE-ANALYSIS.
Conceptual Metaphor
A RACE or JOURNEY (charged particles 'run' or 'migrate' through a gel 'matrix' towards an electrode).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calques like 'электрофорезис'. The standard Russian term is 'электрофорез' (elektroforez).
- Do not confuse with 'электролиз' (electrolysis), a different electrochemical process.
Common Mistakes
- Mispronunciation: stressing the wrong syllable (e.g., e-LEC-tro-pho-RE-sis). Correct stress is on '-pho-' and '-sis'.
- Misspelling: 'electrophoresys', 'electroforests'.
- Using it as a verb ('to electrophoresis'). The verb is 'to perform electrophoresis' or 'to run a gel'.
Practice
Quiz
What is the primary driving force in electrophoresis?
FAQ
Frequently Asked Questions
No. While famous for DNA analysis, electrophoresis is widely used for proteins, RNA, and other charged molecules like some carbohydrates and synthetic polymers.
Both separate mixtures, but chromatography uses a stationary and mobile phase based on chemical affinity, while electrophoresis uses an electric field to move charged particles through a medium (like a gel).
Yes. Capillary electrophoresis occurs in a thin tube filled with buffer, not a slab gel. The principle of charged particle movement in an electric field remains the same.
Smaller fragments move more easily through the porous gel matrix, while larger fragments are more hindered. This results in separation by size/molecular weight.