Word Unit:
umbili-, umbil- (Latin: pertaining to the navel, umbilical cord; a protuberance or swelling; related to umbo, the boss [a convex elevation or knob] of a shield)
Word Unit:
umbra-, umbro-, umbr-, umbel- (Latin: shade, shadow)
Word Unit:
undu-, und- (Latin > French: flow, wave, billow)
Word Unit:
ungu- + (Latin: nail, claw, hoof)
A cross reference, directly or indirectly, involving a word unit meaning "nail (finger, toe); claw": onych-.
Word Unit:
upsilon; Υ, υ + (Greek: the twentieth letter of the Greek alphabet; Υ, υ; upsilon symbol with hook, ϒ)
Word Unit:
uran-, urano- (Greek: heaven [s], vault of heaven; hence "the sky"; from Uranus, the god of the sky; in medicine, the palate, roof, or top of the mouth)