12 letters · 14 points in Scrabble
noun a stain of contrasting color that is used when the principal stain does not show the structure clearly
originEtymology tree Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Proto-Indo-European *-teros Proto-Italic *-teros Proto-Italic *komterosder. Proto-Italic *komterād Latin contrāder. Old French contre- Anglo-Norman countre-bor. Middle English counter- English counter- English stain English counterstain From counter- + stain.
Etymology from Wiktionary, CC BY-SA 3.0