Zool. [ad. mod.L. *antennula, dim. of ANTENNA.] A little antenna; a tiny organ of the nature of an antenna.
1845. Baird, in Proc. Berw. Nat. Club, II. 156. Antennules of two branches of nearly equal size.
1872. Nicholson, Palæont., 147. A pair of small jointed feelers known as the lesser antennæ or antennules.