1580s as a noun; 1732 as an adjective, in reference to Chaldea, the rich plain of southern Babylon, or the people who lived there, with + -an + Latin Chaldaeus, from Greek Khaldaios, from Aramaic (Semitic) Kaldaie, from Akkadian (mat)Kaldu "the Chaldeans."
chaise
chakra
chalazion
Chalcedon
chalcedony
Chaldean
chalet
chalice
chalk
chalkboard
chalk-mark