Cathetus
Pronunciation : Cath"e*tus
Part of Speech : n.;
Etymology : [L., fr. Gr. Catheter.] (Geom.)
Definition : Defn: One line or radius falling perpendicularly on another; as, the catheti of a right-angled triangle, that is, the two sides that include the right angle. Barlow.
pl. catheti.
Source : Webster's Unabridged Dictionary, 1913