Metasternum
Pronunciation : Met`a*ster"num
Part of Speech : n.
Etymology : [Pref. meta- + sternum.]
Definition : 1. (Anat.)
Defn: The most posterior element of the sternum; the ensiform process; xiphisternum.
2. (Zo?l.)
Defn: The ventral plate of the third or last segment of the thorax of insects.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder