alternus
Alternus is a Latin adjective meaning alternating, alternate, or occurring in turn. In classical Latin, it would be used to describe patterns, states, or arrangements that recur in an alternating sequence. The word is formed from the root alter, meaning “the other” or “to change,” with the typical Latin adjectival ending.
In modern usage, alternus appears primarily as a root in technical and scholarly language that draws on
In biology and taxonomy, Latin adjectives are routinely deployed to form species names or, less commonly, genus
See also: alter, alternating, alternation, alternus in Latin dictionaries, and taxonomy naming conventions.