Definition of "hypapophysis" []

• A process, or other element, of a vertebra developed from the ventral side of the centrum. (noun)

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• "The development of the arch, formed by the hypapophyses of the third and fourth dorsal vertebræ, also varies considerably, as does the size of the hypapophysis of the fifth vertebra."
• "The hypapophysis of the second dorsal vertebra varies much in development; being sometimes (as in several, but {166} not all tumblers) nearly as prominent as that of the third dorsal vertebra; and the two hypapophyses together tend to form an ossified arch."