An Etymological Dictionary of Astronomy and Astrophysics

The nominal form of the verb which expresses the idea of action or state without indicating person, number, or tense.

Etymology (EN): Contraction of L. infinitivus modus “unlimited, indefinite mood,” from L. infinitus, → infinite.

Etymology (PE): Karpâyé, literally “action base,” from kar-, → verb, + pâyé, → base.