lophosteon definition

  • noun:
    • The central keel-bearing the main sternum in birds.
    • The central keel-bearing part of the sternum in birds.
    • The median and solitary one of many five individual bones or ossific components of that the sternum of a carinate bird often is made up; the piece or an element of the breast-bone including the crest or keel: correlated with coracosteon, pleurosteon, and metosteon.
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