5 letters · 8 points in Scrabble
noun a group of biological taxa or species that share features inherited from a common ancestor
originLearned borrowing from Ancient Greek κλάδος (kládos, “shoot, branch”). Coined by British evolutionary biologist, philosopher, author Julian Huxley in 1957 in a paper titled The Three Types of Evolutionary Process in Nature. Doublet of cladus and possibly holt.
Etymology from Wiktionary, CC BY-SA 3.0