pendentive

POS

Noun

HYPHEN

pen=den=tive

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CIDE DICTIONARY

pendentive, n. [F. pendentif, fr. L. pendere to hang.].

The portion of a vault by means of which the square space in the middle of a building is brought to an octagon or circle to receive a cupola. [1913 Webster]

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OXFORD DICTIONARY

pendentive, n. Archit. a curved triangle of vaulting formed by the intersection of a dome with its supporting arches.

Etymology

F pendentif -ive (adj.) (as PENDANT)