Origin of cortical
Examples from the Web for cortical
Cortical shell thick walled, smooth, with irregular network.
Cortical shell covered with short conical by-spines and irregular roundish pores, three to four times as broad as the bars.
Medullary shell hexagonal, one-third as large as the cortical shell.
Three gates of the cortical shell kidney-shaped, one and a half times as broad as the arms.
All four chambers of the cortical shell nearly of the same size and form, kidney-shaped, twice as broad as long.
Word Origin and History for cortical
1670s, from Modern Latin corticalis, from cortex "bark of a tree" (see cortex).