H3778 כַּשְׂדִּי (kas-dee')

KJV renderings: Chaldeans, Chaldees, inhabitants of Chaldea.
Strong's definition: a Kasdite, or descendant of Kesed; by implication, a Chaldaean (as if so descended); also an astrologer (as if proverbial of that people
Derivation: (occasionally with enclitic) כַּשְׂדִּימָה; towards the Kasdites into Chaldea), patronymically from H3777 (כֶּשֶׂד) (only in the plural);

From James Strong's public-domain dictionaries (H), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.