01 n. A plate of cartilage, or a series of bony or cartilaginous plates or segments, in the median line of the pectoral skeleton of most vertebra…
pl.
Sterna, Sternums ((#))
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1.
A plate of cartilage, or a series of bony or cartilaginous plates or segments, in the median line of the pectoral skeleton of most vertebrates above fishes; the breastbone.(Anat.)
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2.
The ventral part of any one of the somites of an arthropod.(Zool.)