योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-60, verse-18

कल्पाग्निज्वलनोल्लासपठत्पटपटारवान् ।
आत्मभ्रंशबृहत्क्षोभक्षुब्धाम्बरमहार्णवान् ॥ १८ ॥

kalpāgnijvalanollāsapaṭhatpaṭapaṭāravān ,
ātmabhraṃśabṛhatkṣobhakṣubdhāmbaramahārṇavān 18

18. kalpāgnijvalanollāsapaṭatpaṭapaṭāravān
ātmabhraṃśabṛhatkṣobhakṣubdhāmbaramahārṇavān

18. kalpāgnijvalanollāsapaṭatpaṭapaṭāravān
ātmabhraṃśabṛhatkṣobhakṣubdhāmbaramahārṇavān

18. [I have seen cosmic dissolutions (kalpas)] characterized by the crackling sounds rising from the intense blazing of the destructive fire of the cosmic dissolution (kalpa), and by great oceans of agitated sky, disturbed by the immense turmoil of the disintegration of the Self (ātman).

Words meanings summery:

• कल्पाग्निज्वलनोल्लासपटत्पटपटारवान् (kalpāgnijvalanollāsapaṭatpaṭapaṭāravān) - describing the nature of cosmic dissolutions (kalpāntas) (having the crackling sounds from the intense blazing of the cosmic dissolution fire)

• आत्मभ्रंशबृहत्क्षोभक्षुब्धाम्बरमहार्णवान् (ātmabhraṁśabṛhatkṣobhakṣubdhāmbaramahārṇavān) - describing the nature of cosmic dissolutions (kalpāntas) (having great oceans of agitated sky, agitated by the great upheaval of cosmic disintegration)

Words meanings and morphology

कल्पाग्निज्वलनोल्लासपटत्पटपटारवान् (kalpāgnijvalanollāsapaṭatpaṭapaṭāravān) - describing the nature of cosmic dissolutions (kalpāntas) (having the crackling sounds from the intense blazing of the cosmic dissolution fire)

(adjective)

Accusative, masculine, plural of kalpāgnijvalanollāsapaṭatpaṭapaṭārava

kalpāgnijvalanollāsapaṭatpaṭapaṭārava - having the crackling sounds from the intense blazing of the cosmic dissolution fire

Compound type : bahuvrihi (kalpa+agni+jvalana+ullāsa+paṭat+paṭapaṭārava)

• kalpa – eon, cosmic cycle, dissolution
  noun (masculine)
• agni – fire, sacrificial fire
  noun (masculine)
• jvalana – blazing, burning, flame
  noun (neuter)
  derived from root jval (to blaze)
  Root: jval (class 1)
• ullāsa – outburst, rising up, joy, splendor
  noun (masculine)
  Prefix: ut
  Root: las (class 1)
• paṭat – crackling, popping
  adjective
  Present Active Participle
  from root paṭ (to split, to crackle)
  Root: paṭ (class 1)
• paṭapaṭārava – crackling sound, popping sound
  noun (masculine)

Note: modifies an implied 'kalpāntān' (ends of eons) from a subsequent verse

आत्मभ्रंशबृहत्क्षोभक्षुब्धाम्बरमहार्णवान् (ātmabhraṁśabṛhatkṣobhakṣubdhāmbaramahārṇavān) - describing the nature of cosmic dissolutions (kalpāntas) (having great oceans of agitated sky, agitated by the great upheaval of cosmic disintegration)

(adjective)

Accusative, masculine, plural of ātmabhraṃśabṛhatkṣobhakṣubdhāmbaramahārṇava

ātmabhraṁśabṛhatkṣobhakṣubdhāmbaramahārṇava - having great oceans of agitated sky, agitated by the great upheaval of cosmic disintegration

Compound type : bahuvrihi (ātman+bhraṃśa+bṛhat+kṣobha+kṣubdha+ambara+mahārṇava)

• ātman – self, soul, supreme spirit, cosmic being
  noun (masculine)
• bhraṃśa – fall, destruction, ruin, disintegration
  noun (masculine)
  derived from root bhraṃś (to fall)
  Root: bhraṃś (class 1)
• bṛhat – great, large, vast
  adjective
• kṣobha – agitation, disturbance, commotion
  noun (masculine)
  derived from root kṣubh (to agitate)
  Root: kṣubh (class 4)
• kṣubdha – agitated, disturbed, troubled
  adjective
  Past Passive Participle
  from root kṣubh (to agitate)
  Root: kṣubh (class 4)
• ambara – sky, atmosphere, garment
  noun (neuter)
• mahārṇava – great ocean
  noun (masculine)

Note: modifies an implied 'kalpāntān' (ends of eons) from a subsequent verse