Webster's Revised Unabridged Dictionary · 1913

Extrorse

Extrorse , adjective

[As if from an assumed Latin extrorsus, for extroversus; extra on the outside + vertere, versum, to turn: compare French extrorse.]

(Botany) Facing outwards, or away from the axis of growth; -- said esp. of anthers occupying the outer side of the filament.