Noun:

கோஸ்ட்டா,

costae's Usage Examples:

-Shell thick, with radiating costae; foot carinated, often byssiferous.

-Shell orbicular, smooth externally with radiating costae internally.

True costae always correspond to the septa, and are in fact the peripheral edges of the latter.

Shell equivalve, with radiating costae and external ligament.

th, Theca; c, costae; sp, septa; p, palus; col, columella.

(5) The costae, longitudinal ribs or rows of spines on the outer surface of the theca.

Synonyms:

os, costal cartilage, rib, bone, vertebrate, craniate, true rib,

Antonyms:

black, boneless, natural object,