Extended Strong's Greek Lexicon (Abbott-Smith based)
abyss
Usage: ἄ-βυσσος, -ον (Ion. βυσσός = βυθός), __1. in cl., boundless, bottomless (e.g. ἄ. πέλαγος, ἄ. πλοῦτος Æsch.). __2. [In LXX (for תְּהוֹם, Gen.1:2, al.; exc. Isa.44:27, Job.41:22 for צוּלָה, מְצוּלָה, Job.36:16 for רַחַב) and] NT, as subst. (MM, VGT, see word), ἡ ἄ. (sc. χώρα), the abyss; __(a) of the sea (Gen.1:2); __(b) of the underworld, as the abode of the dead: Rom.10:7 (a paraphrase of Deu.30:13 LXX); as the abode of demons, Luk.8:31, Rev.9:1, 2, 11, 11:7, 17:8, 20:1, 3 (Cremer, 2). † (AS)