योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-26, verse-18

घोरं समभवद्युद्धं देवदानवसेनयोः ।
रोदोरन्ध्रोदुम्बरान्तर्महामशकसंघयोः ॥ १८ ॥

ghoraṃ samabhavadyuddhaṃ devadānavasenayoḥ ,
rodorandhrodumbarāntarmahāmaśakasaṃghayoḥ 18

18. ghoram samabhavat yuddham devadānavasenayoḥ
rodorandhrodumbarāntarmahāmaśakasaṅghayoḥ

18. ghoram yuddham samabhavat devadānavasenayoḥ
rodorandhrodumbarāntarmahāmaśakasaṅghayoḥ

18. A terrible battle took place between the armies of gods and demons, comparable to two great swarms of mosquitoes fighting inside the fruit of an udumbara tree located within the narrow space between heaven and earth.

Words meanings summery:

• घोरम् (ghoram) - terrible, dreadful

• समभवत् (samabhavat) - occurred, took place

• युद्धम् (yuddham) - battle, fight

• देवदानवसेनयोः (devadānavasenayoḥ) - of the armies of gods and demons

• रोदोरन्ध्रोदुम्बरान्तर्महामशकसङ्घयोः (rodorandhrodumbarāntarmahāmaśakasaṅghayoḥ) - of the swarms of great mosquitoes within the fruit of an udumbara tree in the gap between heaven and earth

Words meanings and morphology

घोरम् (ghoram) - terrible, dreadful

(adjective)

Nominative, neuter, singular of ghora

ghora - dreadful, terrible, fearful, formidable

Note: Qualifies 'yuddham'.

समभवत् (samabhavat) - occurred, took place

(verb)

3rd person , singular, active, imperfect (laṅ) of bhū

imperfect tense

3rd person singular imperfect active, with prefix 'sam-'

Prefix: sam

Root: bhū (class 1)

युद्धम् (yuddham) - battle, fight

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, war, fight

Past Passive Participle

From root 'yudh' (to fight), used as a noun.

Root: yudh (class 4)

Note: Subject of 'samabhavat'.

देवदानवसेनयोः (devadānavasenayoḥ) - of the armies of gods and demons

(noun)

Genitive, feminine, dual of devadānavasenā

devadānavasenā - army of gods and demons

Tatpurusha compound, with 'deva-dānava' as a Dvandva compound within.

Compound type : tatpurusha (deva+dānava+senā)

• deva – god, deity
  noun (masculine)
• dānava – demon, titan (descendant of Danu)
  noun (masculine)
• senā – army, host, troop
  noun (feminine)

Note: Indicates the parties involved in the battle.

रोदोरन्ध्रोदुम्बरान्तर्महामशकसङ्घयोः (rodorandhrodumbarāntarmahāmaśakasaṅghayoḥ) - of the swarms of great mosquitoes within the fruit of an udumbara tree in the gap between heaven and earth

(noun)

Genitive, masculine, dual of rodorandhrodumbarāntarmahāmaśakasaṅgha

rodorandhrodumbarāntarmahāmaśakasaṅgha - swarm of great mosquitoes within the fruit of an Udumbara tree located in the gap between heaven and earth

Complex Tatpurusha compound, used for comparison.

Compound type : tatpurusha (rodas+randhra+udumbara+antar+mahā+maśaka+saṅgha)

• rodas – sky and earth (heaven and earth) - used as a dual noun
  noun (neuter)
• randhra – gap, chasm, aperture, defect
  noun (neuter)
• udumbara – fig tree (Ficus glomerata), its fruit
  noun (masculine)
• antar – within, inside, between
  indeclinable
• mahā – great, large, mighty
  adjective
• maśaka – mosquito, gnat
  noun (masculine)
• saṅgha – assembly, host, swarm, multitude
  noun (masculine)

Note: Object of comparison for 'devadānavasenayoḥ'.