Archit. any one of the triangular pieces of vaulting springing from the corners of a rectangular area, serving to support a rounded or polygonal dome: usually supported by a single pier
Origin of pendentiveFrench pendentif ; from Classical Latin pendens, present participle of pendere, to hang: see pendant
A three-sided, curved section of vaulting between the rim of a dome and each adjacent pair of the arches that support it.
Origin of pendentiveFrench pendentif, from Latin pendēns, pendent-, hanging, present participle of pendēre, to hang; see (s)pen- in Indo-European roots.