a. rare. Shell-shaped.
1820. J. Elliotson, trans. Blumenbachs Institutions of Physiology, 163. Sound, which is excited by the collision of elastic bodies and propagated by the air, is perceived by the sense of hearing, and is first received by the Conchiform cartilaginous external ear, which few of our countrymen have the power of moving.
1846. Curtiss Bot. Mag. LXXII. II. Desc. Tab. 4221. Expands into the ample, singularly concave, almost conchiform limb, reticulated with veins.
1892. J. B. Ellis, N. Amer. Pyrenomycetes, 692. At a more advanced stage it becomes compressed and longitudinally striate, conchiform, black and obtuse at the ends.