 4 definitions found
From WordNet (r) 2.0 [wn]:
Sterna
noun: a genus of Sterninae [syn: {genus Sterna}]
From WordNet (r) 2.0 [wn]:
sternum
noun: the flat bone that articulates with the clavicles and the
first seven pairs of ribs [syn: {breastbone}]
[also: {sterna} (pl)]
From WordNet (r) 2.0 [wn]:
sterna
See {sternum}
From The Collaborative International Dictionary of English v.0.44 [gcide]:
Sternum \Ster"num\, noun; pl. L. {Sterna}, E. {Sternums}. [NL.,
from Gr. ?, the breast, chest.]
1. (Anat.) 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.
Note: The sternum is connected with the ribs or the pectorial
girdle, or with both. In man it is a flat bone, broad
anteriorly, narrowed behind, and connected with the
clavicles and the cartilages of the seven anterior
pairs of ribs. In most birds it has a high median keel
for the attachment of the muscles of the wings.
2. (Zo["o]l.) The ventral part of any one of the somites of
an arthropod.
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