योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-76, verse-10

प्रसृतप्रलयाख्येन्द्रमत्तैरावतबृंहितम् ।
आकल्पक्षुब्धमेघाब्धिनिर्ह्रादमिव संभृतम् ॥ १० ॥

prasṛtapralayākhyendramattairāvatabṛṃhitam ,
ākalpakṣubdhameghābdhinirhrādamiva saṃbhṛtam 10

10. prasṛtapralayākhyendramattāirāvatabṛṃhitam
ākalpakṣubdhameghābdinirhrādam iva saṃbhṛtam

10. prasṛtapralayākhyendramattāirāvatabṛṃhitam
ākalpakṣubdhameghābdinirhrādam iva saṃbhṛtam

10. It was like the trumpet of the frenzied Airāvata, who is Indra personified as the spreading dissolution. It was as if it had gathered the roars of oceans and clouds that are agitated at the end of a cosmic age (kalpa).

Words meanings summery:

• प्रसृतप्रलयाख्येन्द्रमत्ताइरावतबृंहितम् (prasṛtapralayākhyendramattāirāvatabṛṁhitam) - describing a sound that is extremely loud and terrifying, like the roar of Indra's maddened elephant during cosmic annihilation, where Indra himself is seen as the destructive force (like the trumpet of Airāvata, maddened by Indra, who is named the spreading dissolution)

• आकल्पक्षुब्धमेघाब्दिनिर्ह्रादम् (ākalpakṣubdhameghābdinirhrādam) - compares the sound or entity to the cataclysmic noise of cosmic dissolution (the roar of oceans and clouds agitated at the end of a cosmic age (kalpa))

• इव (iva) - indicates a simile or comparison (like, as if, as)

• संभृतम् (saṁbhṛtam) - implying that the sound or entity described is a culmination or aggregate of these immense roars (gathered, collected, accumulated, brought together, supported, maintained)

Words meanings and morphology

प्रसृतप्रलयाख्येन्द्रमत्ताइरावतबृंहितम् (prasṛtapralayākhyendramattāirāvatabṛṁhitam) - describing a sound that is extremely loud and terrifying, like the roar of Indra's maddened elephant during cosmic annihilation, where Indra himself is seen as the destructive force (like the trumpet of Airāvata, maddened by Indra, who is named the spreading dissolution)

(adjective)

Accusative, neuter, singular of prasṛtapralayākhyendramattāirāvatabṛṃhita

prasṛtapralayākhyendramattāirāvatabṛṁhita - like the trumpet of Airāvata, maddened by Indra, who is named the spreading dissolution

Compound type : Bahuvrīhi (prasṛta+pralaya+ākhya+indra+matta+airāvata+bṛṃhita)

• prasṛta – spread, extended, diffused, expanded
  adjective
  Past Passive Participle
  From root sṛ (to move, flow) with prefix pra.
  Prefix: pra
  Root: sṛ (class 1)
• pralaya – dissolution, destruction, annihilation (pralaya)
  noun (masculine)
  From root lī (to dissolve) with prefix pra.
  Prefix: pra
  Root: lī (class 4)
• ākhya – named, called, by name
  adjective
  Passive participle/adjective
  From root khyā (to tell, to name) with prefix ā.
  Prefix: ā
  Root: khyā (class 2)
• indra – Indra (a Vedic deity), chief, best
  proper noun/noun (masculine)
• matta – maddened, frenzied, intoxicated, excited
  adjective
  Past Passive Participle
  From root mad (to be intoxicated, to rejoice).
  Root: mad (class 4)
• airāvata – Airavata (Indra's elephant)
  proper noun (masculine)
  Derived from irāvat (rich in water), associated with the cloud-elephant.
• bṛṃhita – trumpet (of an elephant), roar, deep sound
  noun (neuter)
  verbal noun
  From root bṛṃh (to roar, to bellow).
  Root: bṛṃh (class 1)

Note: Adjective modifying an implied neuter singular noun, comparing it to the described sound.

आकल्पक्षुब्धमेघाब्दिनिर्ह्रादम् (ākalpakṣubdhameghābdinirhrādam) - compares the sound or entity to the cataclysmic noise of cosmic dissolution (the roar of oceans and clouds agitated at the end of a cosmic age (kalpa))

(noun)

Accusative, neuter, singular of ākalpakṣubdhameghābdinirhrāda

ākalpakṣubdhameghābdinirhrāda - the roar of oceans and clouds agitated at the end of a cosmic age (kalpa)

Compound type : Tatpuruṣa (ākalpa+kṣubdha+megha+abdhi+nirhrāda)

• ākalpa – up to the kalpa, at the end of a cosmic age (kalpa)
  indeclinable/adjective (masculine)
  ā (up to) + kalpa (cosmic age). Refers to the end of a world period.
  Prefix: ā
• kṣubdha – agitated, stirred, disturbed, troubled
  adjective
  Past Passive Participle
  From root kṣubh (to be agitated).
  Root: kṣubh (class 1)
• megha – cloud
  noun (masculine)
  From root mih (to sprinkle).
  Root: mih (class 1)
• abdhi – ocean, sea (one which contains water)
  noun (masculine)
  From ap (water) + dhā (to hold).
  Prefix: ap
  Root: dhā (class 3)
• nirhrāda – roar, loud sound, thunder, clang
  noun (masculine)
  From root hrād (to roar) with prefix nis.
  Prefix: nis
  Root: hrād (class 1)

Note: Functions as a noun in the accusative case, the object of comparison.

इव (iva) - indicates a simile or comparison (like, as if, as)

(indeclinable)

संभृतम् (saṁbhṛtam) - implying that the sound or entity described is a culmination or aggregate of these immense roars (gathered, collected, accumulated, brought together, supported, maintained)

(adjective)

Accusative, neuter, singular of saṃbhṛta

saṁbhṛta - gathered, collected, accumulated, brought together, supported, maintained, complete

Past Passive Participle

Derived from root bhṛ (to bear, carry) with prefix sam (together, completely).

Prefix: sam

Root: bhṛ (class 1)

Note: Adjective modifying an implied neuter singular noun, agreeing with the preceding descriptive phrases.