महाभारतः mahābhārataḥ - book-8, chapter-11, verse-23

ततो घोरं महाराज अस्त्रयुद्धमवर्तत ।
ग्रहयुद्धं यथा घोरं प्रजासंहरणे अभूत् ॥२३॥

23. tato ghoraṁ mahārāja astrayuddhamavartata ,
grahayuddhaṁ yathā ghoraṁ prajāsaṁharaṇe abhūt.

23. tataḥ ghoram mahārāja astra-yuddham avartata
graha-yuddham yathā ghoram prajā-saṃharaṇe abhūt

23. mahārāja,
tataḥ ghoram astra-yuddham avartata; yathā prajā-saṃharaṇe ghoram graha-yuddham abhūt

23. O great king, a terrible battle using missiles then occurred, as dreadful as the conflict of planets at the time of universal dissolution.

Words meanings summery:

• ततः (tataḥ) - then, subsequently (then, thereafter, from there)

• घोरम् (ghoram) - terrible (terrible, dreadful, awful)

• महाराज (mahārāja) - O great king (addressing Dhṛtarāṣṭra) (O great king)

• अस्त्र-युद्धम् (astra-yuddham) - battle using missiles (missile battle, weapon combat)

• अवर्तत (avartata) - occurred (took place, occurred, proceeded)

• ग्रह-युद्धम् (graha-yuddham) - conflict of planets (planetary conflict, battle of planets)

• यथा (yathā) - just as (as, just as, like)

• घोरम् (ghoram) - dreadful (terrible, dreadful, awful)

• प्रजा-संहरणे (prajā-saṁharaṇe) - at the time of universal dissolution (destruction of all beings) (in the destruction of creatures/beings)

• अभूत् (abhūt) - occurred, happened (was, occurred, became)

Words meanings and morphology

ततः (tataḥ) - then, subsequently (then, thereafter, from there)

(indeclinable)

adverb formed from pronominal base 'tad'

घोरम् (ghoram) - terrible (terrible, dreadful, awful)

(adjective)

neuter, singular of ghora

ghora - terrible, dreadful, formidable, awful

महाराज (mahārāja) - O great king (addressing Dhṛtarāṣṭra) (O great king)

(noun)

Vocative, masculine, singular of mahārāja

mahārāja - great king, sovereign

Compound type : karmadhāraya (mahā+rājan)

• mahā – great, large, mighty
  adjective (feminine)
• rājan – king, ruler
  noun (masculine)

अस्त्र-युद्धम् (astra-yuddham) - battle using missiles (missile battle, weapon combat)

(noun)

neuter, singular of astra-yuddha

astra-yuddha - missile warfare, weapon-battle

Compound type : tatpuruṣa (astra+yuddha)

• astra – missile, projectile, weapon
  noun (neuter)
• yuddha – battle, fight, war
  noun (neuter)

अवर्तत (avartata) - occurred (took place, occurred, proceeded)

(verb)

3rd person , singular, middle, past imperfect (laṅ) of vṛt

Root: vṛt (class 1)

ग्रह-युद्धम् (graha-yuddham) - conflict of planets (planetary conflict, battle of planets)

(noun)

neuter, singular of graha-yuddha

graha-yuddha - planetary war, conflict of celestial bodies

Compound type : tatpuruṣa (graha+yuddha)

• graha – planet, celestial body, seizer
  noun (masculine)
• yuddha – battle, fight, war
  noun (neuter)

यथा (yathā) - just as (as, just as, like)

(indeclinable)

घोरम् (ghoram) - dreadful (terrible, dreadful, awful)

(adjective)

neuter, singular of ghora

ghora - terrible, dreadful, formidable, awful

प्रजा-संहरणे (prajā-saṁharaṇe) - at the time of universal dissolution (destruction of all beings) (in the destruction of creatures/beings)

(noun)

Locative, neuter, singular of prajā-saṃharaṇa

prajā-saṁharaṇa - destruction of creatures, annihilation of beings

Compound type : tatpuruṣa (prajā+saṃharaṇa)

• prajā – creature, being, progeny, people
  noun (feminine)
• saṃharaṇa – drawing together, collecting, destruction, annihilation
  noun (neuter)
  action noun
  from root hṛ with prefix sam
  Prefix: sam
  Root: hṛ (class 1)

अभूत् (abhūt) - occurred, happened (was, occurred, became)

(verb)

3rd person , singular, active, aorist (luṅ) of bhū

Root: bhū (class 1)