Quick Definition
under the earth, subterranean
Strong's Definition
subterranean, i.e. infernal (belonging to the world of departed spirits)
Derivation: from G2596 (κατά) and (the ground);
KJV Usage: under the earth
Thayer's Greek Lexicon
καταχθόνιος, καταχτονιον (κατά (see κατά, III. 3), χθών (the earth)), subterranean, Vulg.infernus: plural, of those who dwell in the world below, i. e. departed souls (cf. Winers Grammar, § 34, 2; but others make the adjective a neuter used indefinitely; see Lightfoot, in the place cited), Php_2:10. (Homer, Dionysius Halicarnassus, Anthol., etc., Inscriptions)
Mounce Concise Greek Dictionary
καταχθόνιος katachthonios 1x
under the earth, subterranean, infernal, Php_2:10
Abbott-Smith Greek Lexicon
* κατα -χθόνιος , -ον
( < χθών , the earth),
subterranean, under the earth (in cl ., of the infernal gods): of the departed in Hades, opp . to ἐπουράνιος , ἐπίγειος , Php_2:10 .†
Moulton & Milligan — Vocabulary of the Greek NT
καταχθόνιος [page 335]
OGIS 382 .1 (ii/A.D.) an inscr. in which Aurelius Pacorus, King of Armenia, announces θ (εοῖς ) κ (αταχθονίοις ) that he has purchased a sarcophagus for his brother. Cf. such common formulae as CIG III. 4252 b .7 ἁμαρτ ]ωλὸς ἒστ [ω θεοῖς κατα ]χθονίοις , 4253 .22 ἔστω ἱερόσυλος [θ ]εοῖς οὐ [ρ ]ανίοις καὶ καταχθονίοις , and the mention of ἄγγελοι καταχθόνιοι for the older ἀμφίπολοι χθόνιοι in Audollent 74 .1 al.
Liddell-Scott — Intermediate Greek Lexicon
καταχθόνιος κατα-χθόνιος, ον "subterranean", Ζεὺς καταχθόνιος, i. e. Pluto, Il. ; δαίμονες κ. "Dii Manes", Anth.
STEPBible — Tyndale Abridged Greek Lexicon
κατα-χθόνιος, -ον
(χθών, the earth),
subterranean, under the earth (in cl., of the infernal gods): of the departed in Hades, opposite to ἐπουράνιος, ἐπίγειος, Php.2:10.†
(AS)