katechon noun1 •Someone or something (of disputed identity) whose removal is necessary before the Antichrist can be fully manifested, according to 2 Thessalonians 2:6-7 in the Bible.He [Peter Thiel] frequently oscillates between talking about the antichrist and the katechon – a term very briefly used in the Bible that refers to something holding back the coming of the antichrist. — 2025