retro pinna — Readham

[Pref. retro-, and Lat. pinna =a fin.] Ichthy.: New Zealand Smelt; a genus of Salmon ide, with one species, Retro pinna richardson i i. [OSMERUS.] re-tro-puls-Ive, adj. [Pref. retro-, and Eng. pulsive (q. v.).] Driving backward, repelling. rě-trorse', adj. [Lat. retrorsus, for retro versus, from retro -backward, and versus, pa. par. of ver to = to turn.] Bot.: Turned backward. re-trorse-lý, adv. [Eng. retrorse; -ly.] In a backward direction.