12 letters · 25 points in Scrabble
originEtymology tree Ancient Greek ῠ̔δρο- (hŭdro-)der. English hydro- Proto-Indo-European *gʷeyh₃-der. Ancient Greek βίος (bíos) Ancient Greek -λογῐ́ᾱ (-logĭ́ā)bor. New Latin -logia New Latin biologialbor. English biology English hydrobiology From hydro- + biology.
Etymology from Wiktionary, CC BY-SA 3.0