כַּסְדַּיKaçday

proper name [of a people and territory]: Kasdim = Chaldeans, Chaldea

Pronunciation: kas-dah'-ee · Hebrew/Aramaic (Old Testament) · H3679

Meanings

1. Chaldeans

a. people dwelling on lower Euphrates and Tigris (Genesis 11:28; Genesis 11:31; Genesis 15:7)

b. especially the people ruled by Nebuchadrezzar (Jeremiah 37:10; Jeremiah 39:5; Ezekiel 23:23)

c. Chaldeans, as learned class, skilled in interpretations (Daniel 2:2; Daniel 2:4)

2. Chaldea (Jeremiah 50:10; Jeremiah 51:24; Jeremiah 51:35)

Same root

כַּשְׂדִּיKasdîy · H3778a Kasdite, or descendant of Kesed; by implication, a Chaldaean (as if so descended); also an astrologer (as if proverbial of that people

Where it appears

Appears 1 times in the Bible.

Ezra 5:12 But because our ancestors angered the God of heaven, he abandoned them to King Nebuchadnezzar of Babylon, who destroyed this Temple and exiled the people to Babylonia.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).