ˈspīrə+ˌ- adjective
Etymology: International Scientific Vocabulary spir- + valve, n., probably originally formed in French
: having a spiral shell — used especially of a gastropod mollusk
ˈspīrə+ˌ- adjective
Etymology: International Scientific Vocabulary spir- + valve, n., probably originally formed in French
: having a spiral shell — used especially of a gastropod mollusk
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012