Excerpt - page 315: "... LUTEA pl. of' luteunt LUTEAL adj pertaining to the Iutc•unt LUTECIUM it 1)]. -S lutetitrin LUTED past tense of lute LUTEFISK ..."
Excerpt - page 1011: "... the lanthanide series. (Symbol: Lu) >early 20th cent.: from French lutecium, from Latin Lutetia, the ancient name of Paris, the home ..."