ETYM From Main strength, possibly influenced by Old Fren. maine, magne, great, Latin magnus. Related to Magnate.
(Homonym: mane).
Of force; of the greatest possible intensity.

ETYM French, from Latin primus first, a superl. corresponding to the compar. prior former. Related to Prior, Foremost, Former, Prim, Primary, Prince.
1. At the best stage.
2. (Math) Of or relating to or being an integer that cannot be factored into other integers.
Used of the first or originating agent.