(Biology)a taxonomic category that ranks below species, usually a fairly permanent geographically isolated race. Subspecies are designated by a Latin trinomial, e.g. (in zoology) Ursus arctos horribilis or (in botany) Beta vulgaris subsp. crassa (生)亚种(用拉丁文三名法命名)。 比较form (义项3)和variety(义项2)