late 14c., "state, fact, or condition of being possible," from Old French possibilité (13c.) and directly from Latin possibilitatem (nominative possibilitas) "possibility," from possibilis (see possible (adj.)). Meaning "a possible thing or substance; that which may take place or come into being" is from c. 1400. Related: Possibilities.
late 14c., "the assumption or possibility that that which happens is dependent upon circumstances or chance," from Medieval Latin contingentia, from contingent- present participle stem of contingere "to touch" (see contact (n.)).
Greek island, largest of the Dodecanese, from Greek Rhodos, which is perhaps from rhodon "rose," which Beekes allows as a possibility, or rhoia "pomegranate," but "more likely" [Room] from a pre-Greek name, from Phoenician erod "snake," for the serpents which were said to have anciently infested the island. Related: Rhodian.