var.

Từ điển WordNet v3.1 - WordNet Dictionary

noun

(biology) a group of organisms within a species that differ in trivial ways from similar groups (Freq. 1)
- a new strain of microorganisms
• Syn:
form, variant, strain
• Derivationally related forms:
variant (for: variant)
• Topics:
biology, biological science
• Hypernyms:
taxonomic group, taxonomic category, taxon
• Member Holonyms:
species