11 letters · 24 points in Scrabble
noun any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms
originBorrowed from French chlorophylle, from Ancient Greek χλωρός (khlōrós, “pale green”) and φύλλον (phúllon, “leaf”).
Etymology from Wiktionary, CC BY-SA 3.0