A suborder of dinoflagellates, in which the flagella are free and do not lie in furrows. ... Origin: G. A-priv. + dien, a whirling ... (05 Mar 2000) ... 
Type: Term Pronunciation: ă-din′i-dă Definitions: 1. A suborder of dinoflagellates, in which the flagella are free and do not lie in furrows.