noun
Etymology: cardinal (I)
: a projection in the shells of many brachiopods at the posterior edge of the dorsal valve to which the muscles that open the shell are attached — see brachiopod illustration
noun
Etymology: cardinal (I)
: a projection in the shells of many brachiopods at the posterior edge of the dorsal valve to which the muscles that open the shell are attached — see brachiopod illustration
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012