From a prolonged form of the prepositional prefix m- and 'ab; from (her (the mother's)) father; Moab, an incestuous son of Lot; also his territory and descendants -- Moab.
see HEBREW 'ab
H4124. Moab
מֹאָב מוֺאָב,180
proper name, of a people and territory Moab (MI1, 2, 5, 6, 12, 20 מאב; Assyrian Ma°aba, Ma°bu, Mu°âba, etc., SchrCOT Glossary, and on Genesis 19:37 DlPar. 294 f., 296; — on etymology compare LagBN 90 Anm., NeSK 1892, 573, GrayProp.N.25); — ׳מו 19:37 178t.; מֹאָב 2 Samuel 8:12; ᵐ5 Μωαβ; —
1 Moab as son of Lot by his elder daughter according to Genesis 19:37.
2 Moab:
a. = nation of which Lot's son is represented as ancestor Genesis 19:37; Numbers 21:29; 22:3 (twice in verse); Amos 2:1-2, Jeremiah 48:1, 230t. 4:8 + often; having a king, Numbers 21:26; 22:4, 10; Judges 3:12; 1 Samuel 12:9 +.
b. = territory of Moab Numbers 21:11, 13 (twice in verse); 21:15 +; מ ׳שְׂדֵת Genesis 36:25; Numbers 15:20; Ruth 1:1-2, 6 (twice in verse); 1:22; 2:6; 4:3; 1 Chronicles 1:46; 8:8; מ ׳אֶרֶץ Deuteronomy 1:5; Deuteronomy 28:69; 32:49; 34:5-6, Judges 11:15, 18 (twice in verse); Jeremiah 48:24, 33; מ ׳מִדְבַּר Deuteronomy 2:8; מ ׳עַרְבוֺת Numbers 22:1; 26:3, 63; 31:12; 33:48-49, 50; 35:1; 36:13; Deuteronomy 34:1, 8; Joshua 13:32.