PS

*tihām(-at)- - sea (Fronzaroli 1965a: 136‒137, 144, 149; Kogan 2011: 191; Kogan 2015: 240)

Akkadian
tiāmtu - sea, ocean, lake (CAD T 150, AHw. 1353)
Ugaritic
thm, thmt - primordial ocean, abyss (DUL 864)
Hebrew
təhōm - primaeval ocean, primaeval flood; flood, deluge (HALOT 1690)
Syriac
thōmā - wave; sea; abyss (LSyr. 816, SL 1624)
Arabic
tihāmat- - a certain land ... extending to the sea (Tihámeh) (Lane 320)