noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A group of organisms once (but no longer) thought to be a separate species (and sometimes given such a name)
2. 2
   A group of similar nucleic acid molecules; a group of organisms (especially viruses) having such similar genomes.

Etymology

From quasi- + species.

Related phrases

nucleic acid

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.