From yacad; a foundation -- foundation.
see HEBREW yacad
H4144. mosad
[מוֺסָד] noun masculinePsalm 18:8 foundation; — plural absolute מוֺסָדוֺת Jeremiah 51:26; construct מוֺסְדוֺת Psalm 18:16 2t.; מֹסְדוֺת 2 Samuel 22:16; מוֺסְדֵי Deuteronomy 32:22 6t.; מֹסְדֵי Micah 6:2; — foundations למ ׳אֶבֶן Jeremiah 51:26; אֶרֶץ מוֺסְדֵי foundations of the earth Micah 6:2; Isaiah 24:18; Jeremiah 31:37; Psalm 82:5; Proverbs 8:29; ׳מ ׳הא Isaiah 40:21; ׳מ תֵּבֵל Psalm 18:16 = 2 Samuel 22:16; ׳מ הרים Deuteronomy 32:22; Psalm 18:8; 2 Samuel 22:8 has (less well) ׳מ שׁמים; ׳מ דורוֿדור Isaiah 58:12 ("" עולם חָרְבוֺת) i.e. ancient foundations, now ruined.