سدة

Where it comes from

Due to either the connection in the development of architecture or that of administration, loaning from Aramaic שִדְּתָא /שִידְּתָא / ܫܶܕ݁ܬܳܐ (šeddəṯā) is likely, it originally having the abstract meaning of “base”, derivative of שִׁדָּא (šiddā, “side, edge; base”), then a chest where things are laid down or deposited, then also transferred to office and status, the latter apparently a cognate of Akkadian 𒅖𒁺𒌝 (išdum, “base, foundation; administration, government”) and Arabic اِسْت (ist, “rump, bottom; foundation, beginning”). Further support is assumed Aramaic origin of Neo-Babylonian šiddatum (“chest”) and šiddum (“side”).