( n. pl. )
An order of free-swimming marine worms, of which the genus Sagitta is the type. They have groups of curved spines on each side of the head.
( n. pl. )
An order of free-swimming marine worms, of which the genus Sagitta is the type. They have groups of curved spines on each side of the head.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012