criocone adjective 1noun 1forms 1 adjective1 •Crioconic.[...] disturbance to such a form might produce rapid acceleration in two ways — in shape, from serpenticone to criocone, in ornament, from tuberculate to costate, that is, costate post-tuberculate. — 1927 noun1 •An organism or fossil with a crioconic shell, or such a shell itself. formscriocones