molecular knife: meaning, definition, pronunciation and examples
LowTechnical/Scientific
Quick answer
What does “molecular knife” mean?
A protein or enzyme that cuts DNA at specific sequences, used in genetic engineering.
Audio
Pronunciation
Definition
Meaning and Definition
A protein or enzyme that cuts DNA at specific sequences, used in genetic engineering.
Any engineered biological tool (such as CRISPR-Cas9 or restriction enzymes) designed to precisely cut or edit genetic material at the molecular level.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling conventions follow standard UK/US patterns for surrounding text (e.g., 'enzymes' vs. 'enzymes' is identical).
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low frequency in both UK and US English, confined to specialist literature.
Grammar
How to Use “molecular knife” in a Sentence
Scientists use [molecular knife] to edit genes.The [molecular knife] cuts the DNA strand.This enzyme acts as a [molecular knife].Vocabulary
Collocations
Examples
Examples of “molecular knife” in a Sentence
verb
British English
- The enzyme will molecular-knife the genome at the target site.
- Researchers aim to molecular-knife the defective gene.
American English
- The enzyme will molecular-knife the genome at the target site.
- The goal is to molecular-knife the mutation out.
adverb
British English
- [Not standardly used as an adverb]
American English
- [Not standardly used as an adverb]
adjective
British English
- The molecular-knife technique is revolutionary.
- They published a molecular-knife protocol.
American English
- The molecular-knife approach is highly specific.
- It's a molecular-knife technology.
Usage
Meaning in Context
Business
Rare, except in biotech investment or patent discussions.
Academic
Common in molecular biology, genetics, and biotechnology research papers.
Everyday
Virtually never used.
Technical
Primary domain of use; refers to specific proteins or CRISPR components.
Vocabulary
Synonyms of “molecular knife”
Strong
Neutral
Weak
Vocabulary
Antonyms of “molecular knife”
Watch out
Common Mistakes When Using “molecular knife”
- Using it to refer to any sharp instrument at a small scale (e.g., a nanoscale scalpel).
- Confusing it with 'molecular scalpel', which is less common.
FAQ
Frequently Asked Questions
No, it is a low-frequency technical term used almost exclusively in genetics and molecular biology.
The restriction enzyme EcoRI or the CRISPR-associated protein Cas9 are classic examples that perform this function.
No, it is always a metaphorical term for a biological macromolecule (like a protein) that cuts DNA or RNA.
Yes, 'molecular scissors' is a very close synonym and is perhaps more commonly used in popular science.
A protein or enzyme that cuts DNA at specific sequences, used in genetic engineering.
Molecular knife is usually technical/scientific in register.
Molecular knife: in British English it is pronounced /məˌlek.jə.lə ˈnaɪf/, and in American English it is pronounced /məˌlek.jə.lɚ ˈnaɪf/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[Not applicable for this technical term]”
Learning
Memory Aids
Mnemonic
Imagine a tiny, precise knife used by scientists to 'cut and paste' genes, like editing text with scissors.
Conceptual Metaphor
TOOLS ARE BODY PARTS / PRECISION IS A SHARP INSTRUMENT (The complex enzyme is conceptualised as a simple, precise cutting tool).
Practice
Quiz
In which field is the term 'molecular knife' primarily used?