9 letters · 11 points in Scrabble
noun blood serum containing antibodies against specific antigens; provides immunity to a disease
originEtymology tree English anti- Proto-Indo-European *ser- Proto-Indo-European *sér-o-der. Proto-Italic *serom Latin serumder. English serum English antiserum From anti- + serum.
Etymology from Wiktionary, CC BY-SA 3.0