gramicidin: meaning, definition, pronunciation and examples
LowTechnical/Scientific
Quick answer
What does “gramicidin” mean?
A type of antibiotic, usually derived from soil bacteria, that is effective against some gram-positive bacteria.
Audio
Pronunciation
Definition
Meaning and Definition
A type of antibiotic, usually derived from soil bacteria, that is effective against some gram-positive bacteria.
Specifically, a complex of antibiotic polypeptides produced by the soil bacterium Bacillus brevis. It is often used in topical antibacterial ointments and, historically, in research on biological membranes due to its ion channel-forming properties.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is identical. The compound may be more commonly referred to in its branded forms (e.g., 'Neosporin') in everyday contexts, which are international.
Connotations
Purely technical/scientific in both regions.
Frequency
Equally low frequency in both regions, confined to specialist fields.
Grammar
How to Use “gramicidin” in a Sentence
Gramicidin is used in [product name].The mechanism of [action] of gramicidin involves [forming ion channels].[Treatment] with a gramicidin-containing ointment.Vocabulary
Collocations
Examples
Examples of “gramicidin” in a Sentence
adjective
British English
- The gramicidin component of the cream is crucial.
- They studied gramicidin channels in lipid bilayers.
American English
- The gramicidin-based treatment proved effective.
- Gramicidin research advanced our understanding of ion transport.
Usage
Meaning in Context
Business
Rare, except in pharmaceutical industry reports or patent documents.
Academic
Common in microbiology, biochemistry, pharmacology, and medical research papers.
Everyday
Virtually never used. A patient might see it listed as an ingredient on a medicine tube.
Technical
The primary register. Used precisely to refer to the specific antibiotic compound.
Vocabulary
Synonyms of “gramicidin”
Watch out
Common Mistakes When Using “gramicidin”
- Misspelling as 'grammicidin' or 'gramacidin'.
- Using it as a general term for any antibiotic.
- Incorrect pronunciation stressing the first syllable (GRAM-icidin) instead of the third (gram-i-CID-in).
FAQ
Frequently Asked Questions
As a topical ingredient in over-the-counter ointments, it is generally considered safe for minor skin infections. However, it should not be used on deep wounds or serious burns without medical advice, and some people may be allergic.
It works by forming ion channels in the membranes of susceptible bacterial cells. These channels allow essential ions to leak out, disrupting the cell's internal balance and ultimately killing the bacterium.
No, gramicidin is not used systemically (e.g., in pills or injections) because it is also toxic to human red blood cells. Its use is strictly limited to topical applications on the skin.
It refers to 'Gram-positive' bacteria, a classification based on a staining technique (the Gram stain). Gramicidin is primarily effective against this group of bacteria.
A type of antibiotic, usually derived from soil bacteria, that is effective against some gram-positive bacteria.
Gramicidin is usually technical/scientific in register.
Gramicidin: in British English it is pronounced /ˌɡramɪˈsʌɪdɪn/, and in American English it is pronounced /ˌɡræməˈsaɪdən/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'GRAM-positive bacteria cidin (killing)' -> gramicidin kills certain gram-positive bacteria.
Conceptual Metaphor
GRAMICIDIN IS A KEY: It functions by inserting itself into bacterial cell membranes like a key into a lock, forming a channel that disrupts the cell.
Practice
Quiz
In which field is the term 'gramicidin' MOST commonly used?