11 letters · 21 points in Scrabble
noun (chemistry) the state of having a valence greater than two
noun (toxicology) the state of being capable of counteracting more than one toxin or antigen or kind of microorganism
originEtymology tree Proto-Indo-European *pleh₁- Proto-Indo-European *polh₁ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- English valence English polyvalence From poly- + valence.
Etymology from Wiktionary, CC BY-SA 3.0