8 letters · 10 points in Scrabble
noun primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
originFrom translingual Tunicata + -ate (noun-forming suffix). Further from Latin tunicātus, perfect passive participle of tunicō (“to clothe with a tunic”).
Etymology from Wiktionary, CC BY-SA 3.0