10 letters · 16 points in Scrabble
noun an antibody that causes precipitation when it unites with its antigen
originEtymology tree English precipitate Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ineclip. English -in English precipitin From precipitate + -in.
Etymology from Wiktionary, CC BY-SA 3.0