Xylamide :: Xylamide (n.) An acid amide derivative of xylic acid, obtained as a white crystalline substance..
Xylophagides :: Xylophagides (n. pl.) A tribe or family of dipterous flies whose larvae live in decayed wood. Some of the tropical species are very large.
Yuletide :: Yuletide (n.) Christmas time; Christmastide; the season of Christmas.
Zincide :: Zincide (n.) A binary compound of zinc.
Zircofluoride :: Zircofluoride (n.) A double fluoride of zirconium and hydrogen, or some other positive element or radical; as, zircofluoride of sodium..