trinomial, trinomen

Term: trinomial, trinomen (pl trinomina)

Literally meaning: “state of three names”

Origin: Anc Greek

τρείς-/tris (= the number three)

+ὄνομα/ onoma (=name) > νέμω/nemo (=distribute)

Coined/History

(?)

Definition

Trionomial is the name consisting of three terms  (generic name, specific name, subspecific name) always in italics, reffering to  a subspecies (ssp). In botany there is  an trinomial name with the addition of a connecting term to indicate the rank of name.

Eg: (zoology)  Equus ferus caballus  (the name of the horse that is one of two extannt subspecies of Equus ferus, or the wild horse)

(botany): Rosmarinus eriocalix subsp. Tomentosus (a  rosemary subspecies)  or  Crataegus azarolus var pontica (Mediterranean hawthorn)