|Noah Webster's Dictionary|
1. (a.) Belonging to the aerial regions, or visible heavens.
2. (a.) of or pertaining to the spiritual heaven; heavenly; divine.
3. (n.) An inhabitant of heaven.
4. (n.) A native of China.
Int. Standard Bible Encyclopedia
se-les'-chal (epouranios, "above the sky," "heavenly"): Peculiar to Paul's majestic argument on the resurrection: celestial verses terrestrial bodies (1 Corinthians 15:40) with reference possibly to sun and moon, etc., but more probably to the bodies of angels in distinction from those of beasts and mortal men (compare Christ's words, Matthew 22:30 Luke 20:36); including also doubtless in the apostle's thought the resurrection-body of Jesus and of the saints already taken-into glory. Light is thrown on its meaning by the rendering of the same Greek original as "heavenly places" (Ephesians 1:3, 20; Ephesians 2:6; Ephesians 3:10); "heavenly" (1 Corinthians 15:48). Hence, "celestial" as used by Paul indicates the soul's continued life beyond the grave, the spiritual body of the redeemed in heaven, who, in Christ, have put on immortality.
Dwight M. Pratt
Celestial (3 Occurrences)
1 Corinthians 15:40 There are also celestial bodies, and terrestrial bodies; but the glory of the celestial differs from that of the terrestrial. (WEB KJV WEY ASV WBS RSV)
2 Peter 2:10 but chiefly those who walk after the flesh in the lust of defilement, and despise authority. Daring, self-willed, they are not afraid to speak evil of dignitaries; (See NIV)
Jude 1:8 Yet in like manner these also in their dreaming defile the flesh, despise authority, and slander celestial beings. (WEB NIV)