conoido-|kəʊˈnɔɪdəʊ|combining form of conoid, prefixed to adjectives denoting shape, and expressing modification towards the conical form, as in conoido-hemispherical, conoido-rotundate. (Cf. conico-.)1848Dana Zooph. 415 Calicles..conoido-hemispherical.Ibid. 290 Small, orbicular, high conoido-rotundate.