11 letters · 18 points in Scrabble
adjective having similar appearance but genetically different
originEtymology tree Ancient Greek ῐ̓́σος (ĭ́sos)lbor. English iso- Ancient Greek μορφή (morphḗ)bor. English -morph Proto-Indo-European *h₃ed- Proto-Indo-European *-os Proto-Indo-European *h₃édosder.? Proto-Italic *-ōtsos or *-otsos Latin -ōsus Old French -usbor. Middle English -ous English -ous English -morphous English isomorphous From iso- + -morphous.
Etymology from Wiktionary, CC BY-SA 3.0