Source : Webster's Revised Unabridged Dictionary (1913)

Oviform \O"vi*form\, a. [Ovum + -form: cf. F. oviforme.] (Biol.)
   Having the form or figure of an egg; egg-shaped; as, an
   oviform leaf.

Source : WordNet®

oviform
     adj : rounded like an egg [syn: {egg-shaped}, {elliptic}, {elliptical},
            {oval}, {ovate}, {ovoid}, {prolate}]