basophil
C2Technical/Scientific
Definition
Meaning
A type of white blood cell characterized by staining readily with basic dyes and involved in allergic responses and defense against parasites.
In a broader biological context, any cell, tissue element, or microorganism that stains easily with basic dyes. The term can also refer to a type of granulocyte with large cytoplasmic granules.
Linguistics
Semantic Notes
Strictly a biological/medical term. The plural is 'basophils'. Not to be confused with 'basophile' (adjective) or 'basophilia' (the condition of having an elevated basophil count).
Dialectal Variation
British vs American Usage
Differences
No significant spelling or usage differences. Pronunciation may have minor stress or vowel variations.
Connotations
Purely technical with identical connotations in both dialects.
Frequency
Used exclusively in medical, biological, and haematological contexts in both regions with equal frequency.
Vocabulary
Collocations
Grammar
Valency Patterns
The [condition/assay] caused basophil [activation/degranulation].An increased [number/count] of basophils was observed.Basophils [release/contain] [histamine/heparin].Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Used in advanced biology, medicine, immunology, and haematology textbooks and research papers.
Everyday
Virtually never used in everyday conversation.
Technical
Core term in clinical pathology reports, immunology labs, and haematology discussions.
Examples
By Part of Speech
adjective
British English
- The smear showed basophilic staining.
- A basophilic granulocyte was identified.
American English
- The tissue had a basophilic cytoplasm.
- Basophilic granules are characteristic.
Examples
By CEFR Level
- Basophils are a type of white blood cell.
- The doctor said my basophil count was normal.
- A high basophil count can sometimes indicate an allergic reaction or chronic inflammation.
- Histamine release from activated basophils contributes to the symptoms of hay fever.
Learning
Memory Aids
Mnemonic
Think 'BASE-o-phil': It loves BASEic (alkaline) dyes. Or: BA-SO-phil: It BAReS SOmething (histamine) in its granules.
Conceptual Metaphor
A SENTRY WITH BLUE GRENADES (blue-staining granules containing chemical mediators).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- False friend: Do not confuse with 'basophilia' (базофилия), which is the elevated count, not the cell itself. The direct translation 'базофил' is correct but highly technical.
Common Mistakes
- Misspelling as 'basophile' (which is the adjective).
- Pronouncing it as /bæˈsɒ.fɪl/.
- Confusing it with 'basal' cells or 'eosinophils'.
Practice
Quiz
What is the primary role of a basophil in the immune system?
FAQ
Frequently Asked Questions
Basophilia (high basophil count) can be associated with allergic reactions, chronic inflammation, some leukaemias, or hypothyroidism, but it is often mild and non-specific.
No. They are closely related and have similar functions (both release histamine), but they are distinct cell types. Basophils circulate in the blood, while mast cells reside in tissues.
They are the rarest type of granulocyte, typically making up less than 1% of the total white blood cell count.
The name comes from their microscopic staining property: their cytoplasmic granules have an affinity for basic (alkaline) dyes, taking on a blue-purple colour.