Subtend
Pronunciation : Sub*tend"
Part of Speech : v.
Etymology : [L. subtendere; sub under + tendere to stretch, extend. See Tend.]
Definition : Defn: To extend under, or be opposed to; as, the line of a triangle which subtends the right angle; the chord subtends an arc.
t. [imp. & p. p. Subtended; p. pr. & vb. n. Subtending.]
Source : Webster's Unabridged Dictionary, 1913