योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-128, verse-33

तमतीत्य ततः प्राप तेजोऽर्कगणभीषणम् ।
प्रलयाग्निघनज्वालापिण्डकोटरभास्वरम् ॥ ३३ ॥

tamatītya tataḥ prāpa tejo'rkagaṇabhīṣaṇam ,
pralayāgnighanajvālāpiṇḍakoṭarabhāsvaram 33

33. tam atītya tataḥ prāpa tejaḥ arka-gaṇa-bhīṣaṇam
pralaya-agni-ghana-jvālā-piṇḍa-koṭara-bhāsvaram

33. tam atītya tataḥ arka-gaṇa-bhīṣaṇam
pralaya-agni-ghana-jvālā-piṇḍa-koṭara-bhāsvaram tejaḥ prāpa

33. Having surpassed that (realm), he then reached a radiant energy (tejas) terrifying like a multitude of suns, shining like the cavernous core of dense masses of flames from the fire of cosmic dissolution.

Words meanings summery:

• तम् (tam) - that (realm/space) (that, him)

• अतीत्य (atītya) - having crossed, having surpassed

• ततः (tataḥ) - then, from there, thence

• प्राप (prāpa) - he obtained, he reached

• तेजः (tejaḥ) - splendor, light, radiant energy

• अर्क-गण-भीषणम् (arka-gaṇa-bhīṣaṇam) - terrifying like a multitude of suns

• प्रलय-अग्नि-घन-ज्वाला-पिण्ड-कोटर-भास्वरम् (pralaya-agni-ghana-jvālā-piṇḍa-koṭara-bhāsvaram) - shining like the hollows of dense flames of the fire of dissolution

Words meanings and morphology

तम् (tam) - that (realm/space) (that, him)

(pronoun)

Accusative, masculine, singular of tad

tad - that

अतीत्य (atītya) - having crossed, having surpassed

(indeclinable)

absolutive

Formed from ati-i (to go over) + lyap suffix

Prefix: ati

Root: i (class 2)

ततः (tataḥ) - then, from there, thence

(indeclinable)

प्राप (prāpa) - he obtained, he reached

(verb)

3rd person , singular, active, past perfect (liṭ) of prāp

Perfect active, 3rd person singular

From pra-āp

Prefix: pra

Root: āp (class 5)

तेजः (tejaḥ) - splendor, light, radiant energy

(noun)

Accusative, neuter, singular of tejas

tejas - splendor, light, radiant energy

Root: tij (class 6)

अर्क-गण-भीषणम् (arka-gaṇa-bhīṣaṇam) - terrifying like a multitude of suns

(adjective)

Accusative, neuter, singular of arka-gaṇa-bhīṣaṇa

arka-gaṇa-bhīṣaṇa - terrifying like a multitude of suns

Compound type : tatpuruṣa (arka-gaṇa+bhīṣaṇa)

• arka – sun
  noun (masculine)
  Root: arc (class 1)
• gaṇa – multitude, host, group
  noun (masculine)
  Root: gaṇ (class 10)
• bhīṣaṇa – terrifying, dreadful, frightful
  adjective
  From root bhī (to fear) with ṇic (causative) and ana suffix
  Root: bhī (class 3)

Note: Adjective for tejaḥ.

प्रलय-अग्नि-घन-ज्वाला-पिण्ड-कोटर-भास्वरम् (pralaya-agni-ghana-jvālā-piṇḍa-koṭara-bhāsvaram) - shining like the hollows of dense flames of the fire of dissolution

(adjective)

Accusative, neuter, singular of pralaya-agni-ghana-jvālā-piṇḍa-koṭara-bhāsvara

pralaya-agni-ghana-jvālā-piṇḍa-koṭara-bhāsvara - shining like the hollows of dense flames of the fire of dissolution

Compound type : tatpuruṣa (pralaya+agni+ghana+jvālā+piṇḍa+koṭara+bhāsvara)

• pralaya – dissolution, destruction
  noun (masculine)
  From pra-lī (to dissolve)
  Prefix: pra
  Root: lī (class 4)
• agni – fire
  noun (masculine)
  Root: ag
• ghana – dense, thick, solid
  adjective
  Root: han
• jvālā – flame, blaze
  noun (feminine)
  From root jval (to blaze)
  Root: jval (class 1)
• piṇḍa – lump, mass, ball
  noun (masculine)
  Root: piṇḍ (class 1)
• koṭara – hollow, cavity, hole
  noun (masculine)
• bhāsvara – shining, radiant, lustrous
  adjective
  From root bhās (to shine) with vara suffix
  Root: bhās (class 1)

Note: Adjective for tejaḥ.