महाभारतः mahābhārataḥ - book-3, chapter-195, verse-16

अन्तरिक्षे विमानानि देवतानां युधिष्ठिर ।
तत्रैव समदृश्यन्त धुन्धुर्यत्र महासुरः ॥१६॥

16. antarikṣe vimānāni devatānāṁ yudhiṣṭhira ,
tatraiva samadṛśyanta dhundhuryatra mahāsuraḥ.

16. antarikṣe vimānāni devatānām yudhiṣṭhira tatra
eva samadṛśyanta dhundhuḥ yatra mahāsuraḥ

16. O Yudhiṣṭhira, the aerial chariots (vimānas) of the gods were seen in that very sky where the great demon Dhundhu was.

Words meanings summery:

• अन्तरिक्षे (antarikṣe) - in the sky (in the sky, in space, in the atmosphere)

• विमानानि (vimānāni) - aerial chariots (vimānas) (aerial chariots, celestial cars, airplanes)

• देवतानाम् (devatānām) - of the gods (of the gods, of the deities)

• युधिष्ठिर (yudhiṣṭhira) - O Yudhiṣṭhira (vocative) (Yudhiṣṭhira (proper noun))

• तत्र (tatra) - there (there, in that place)

• एव (eva) - very, precisely (indeed, only, just, certainly)

• समदृश्यन्त (samadṛśyanta) - were seen (they were seen, they appeared)

• धुन्धुः (dhundhuḥ) - Dhundhu (name of the demon) (Dhundhu (proper noun))

• यत्र (yatra) - where (where, in which place)

• महासुरः (mahāsuraḥ) - the great demon (great demon)

Words meanings and morphology

अन्तरिक्षे (antarikṣe) - in the sky (in the sky, in space, in the atmosphere)

(noun)

Locative, neuter, singular of antarikṣa

antarikṣa - atmosphere, sky, space, intermediate region

Note: Location for vimānāni.

विमानानि (vimānāni) - aerial chariots (vimānas) (aerial chariots, celestial cars, airplanes)

(noun)

Nominative, neuter, plural of vimāna

vimāna - aerial chariot, celestial car, airplane, palace, temple

From vi (prefix) + root mā (to measure) + ana (suffix).

Prefix: vi

Root: mā (class 2)

Note: Subject of samadṛśyanta.

देवतानाम् (devatānām) - of the gods (of the gods, of the deities)

(noun)

Genitive, feminine, plural of devatā

devatā - deity, divinity, godhead, god

From deva with tā suffix (feminine abstract noun, but here refers to gods in general).

Note: Possessive, describing vimānāni.

युधिष्ठिर (yudhiṣṭhira) - O Yudhiṣṭhira (vocative) (Yudhiṣṭhira (proper noun))

(proper noun)

Vocative, masculine, singular of yudhiṣṭhira

yudhiṣṭhira - Yudhiṣṭhira (name of the eldest Pāṇḍava prince)

Compound yudhi (in battle) + sthira (firm). 'Firm in battle.'

Compound type : tatpuruṣa (yudh+sthira)

• yudh – battle, war
  noun (feminine)
  Locative form yudhi.
  Root: yudh (class 4)
• sthira – firm, steady, stable
  adjective (masculine/neuter)
  From root sthā (to stand).
  Root: sthā (class 1)

Note: Addressed to Yudhiṣṭhira.

तत्र (tatra) - there (there, in that place)

(indeclinable)

Adverb of place.

एव (eva) - very, precisely (indeed, only, just, certainly)

(indeclinable)

Emphatic particle.

समदृश्यन्त (samadṛśyanta) - were seen (they were seen, they appeared)

(verb)

3rd person , plural, passive, past imperfect (laṅ) of dṛś

Past Imperfect, Passive Voice

3rd person plural past imperfect, passive voice. Root dṛś (I class) with prefix sam.

Prefix: sam

Root: dṛś (class 1)

Note: Subject is vimānāni.

धुन्धुः (dhundhuḥ) - Dhundhu (name of the demon) (Dhundhu (proper noun))

(proper noun)

Nominative, masculine, singular of dhundhu

dhundhu - Dhundhu (a name, often of a demon or a king)

Note: Subject of implied 'was'.

यत्र (yatra) - where (where, in which place)

(indeclinable)

Adverb of place, correlative to tatra.

महासुरः (mahāsuraḥ) - the great demon (great demon)

(noun)

Nominative, masculine, singular of mahāsura

mahāsura - great demon, powerful demon

Compound type : karmadhāraya (mahā+asura)

• mahā – great, mighty
  adjective (neuter)
  Stem form of mahat used in compounds.
• asura – demon, titan, anti-god
  noun (masculine)