Episternum
Pronunciation : Ep`i*ster"num
Part of Speech : n.;
Etymology : [NL. See Epi-, and Sternum.]
Definition : 1. (Anat.) (a) A median bone connected with the sternum, in many vertebrates; the interclavicle. (b) Same as Epiplastron.
2. (Zo?l.)
Defn: One of the lateral pieces next to the sternum in the thorax of insects.
pl. Episterna.
Source : Webster's Unabridged Dictionary, 1913