Quick Definition
καταχθόνιος, ον Adj under the earth, subterranean
Strong's Definition
from 2596 and chthon (the ground); subterranean, i.e. infernal (belonging to the world of departed spirits)
KJV Usage: under the earth
UBS Dictionary of the Greek New Testament
adjc. | -ον | χθόνιος (in/under the earth)
1.17 · Geographical Objects and Features · Regions Below the Surface of the Earth
the world below, what is beneath the earth, under the earth pertaining to being below the surface of the earth In PHP 2:10 καταχθονίων is probably a reference to the dead, generally regarded as inhabiting a dark region under the ground.
1 PHP 2:10 There are two basic problems involved in the translation of PHP 2:10. For example, the phrase ‘at the name of Jesus’ may mean ‘when the name of Jesus is proclaimed’ or ‘when the presence of Jesus is announced.’ The phrase ‘every knee’ means every person, since ‘knee’ is a figurative substitute for a person (see 9.16).
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
κατα-χθόνιος, -ov, (kara [see κατά, III. 3], χθών [the earth]), subterranean, Vulg. infernus: plur., of those who dwell in the world below, i. e. departed souls [ef. W. § 34, 2; but al. make the adj. a neut. used indefinitely; see Bp. Lehtft. in loc.], Phil. ii. 10. (Hom., Dion. H., Anthol., ete., Inserr.)
Mounce Concise Greek Dictionary
καταχθόνιος katachthonios 1x
under the earth, subterranean, infernal, Phil. 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, Phl 2:10.†
Moulton & Milligan — Vocabulary of the Greek NT
καταχθόνιος. OGTS 3821 (ii/A.p.)—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 C/G III. 425267 ἁμαρτ]ωλὸς ἔστ[ὼ θεοῖς κατα]χθονίοις, 425 3°% ἔστω ἱερόσυλος [θ]εοῖς οὐ[ρ]ανίοις καὶ καταχθονίοις, and the mention of ἄγγελοι καταχθόνιοι for the older ἀμφίπολοι χθόνιοι in A udollent 74} al.
Liddell-Scott-Jones — Greek-English Lexicon
καταχθόνιος (katachthonios) — subterranean. καταχθόν-ιος, ον, also η, ον [Refs 3rd c.BC+]:— subterranean, Ζεὺς καταχθόνιος, i.e. Pluto, [Refs 8th c.BC+]; of Pluto, Demeter, Persephone, and the Erinyes, [Refs 4th c.AD+] M.; = Latin Di Manes, [Refs]; κ.θεοί, = Latin Di Manes, frequently in sepulchral Inscrr., [Refs]