8 letters · 12 points in Scrabble
noun (biology) a taxonomic category below a class and above an order
originEtymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Latin sub-der. English sub- Proto-Indo-European *kelh₁-der. Proto-Italic *klāssis Latin classisder. Middle French classebor. English class English subclass From sub- + class.
Etymology from Wiktionary, CC BY-SA 3.0