महाभारतः mahābhārataḥ - book-7, chapter-129, verse-26

ततोऽभवन्महाशब्दस्तुमुलो लोमहर्षणः ।
समावृण्वन्दिशः सर्वा महेन्द्राशनिनिस्वनः ॥२६॥

26. tato'bhavanmahāśabdastumulo lomaharṣaṇaḥ ,
samāvṛṇvandiśaḥ sarvā mahendrāśaninisvanaḥ.

26. tataḥ abhavan mahāśabdaḥ tumulaḥ lomaharṣaṇaḥ
samāvṛṇvan diśaḥ sarvāḥ mahendrāśani-nisvanaḥ

26. tataḥ mahāśabdaḥ tumulaḥ lomaharṣaṇaḥ samāvṛṇvan
sarvāḥ diśaḥ mahendrāśani-nisvanaḥ abhavan

26. Then a great, tumultuous, hair-raising sound arose, filling all directions, a sound like the crash of Indra's thunderbolt.

Words meanings summery:

• ततः (tataḥ) - then (then, thence, therefore)

• अभवन् (abhavan) - there arose (grammatically plural, though the subject 'mahāśabdaḥ' is singular; possibly poetic usage for a pervasive sound) (they were, they arose, they happened)

• महाशब्दः (mahāśabdaḥ) - a great sound (a great sound, a loud noise)

• तुमुलः (tumulaḥ) - tumultuous (tumultuous, noisy, agitated)

• लोमहर्षणः (lomaharṣaṇaḥ) - hair-raising (hair-raising, thrilling, causing goosebumps)

• समावृण्वन् (samāvṛṇvan) - filling (covering, encompassing, filling)

• दिशः (diśaḥ) - directions (directions, quarters)

• सर्वाः (sarvāḥ) - all (all, every)

• महेन्द्राशनि-निस्वनः (mahendrāśani-nisvanaḥ) - a sound like the crash of Indra's thunderbolt (sounding like Indra's thunderbolt)

Words meanings and morphology

ततः (tataḥ) - then (then, thence, therefore)

(indeclinable)

From the pronoun base `tad` with the ablative suffix `tas`.

अभवन् (abhavan) - there arose (grammatically plural, though the subject 'mahāśabdaḥ' is singular; possibly poetic usage for a pervasive sound) (they were, they arose, they happened)

(verb)

3rd person , plural, active, past imperfect (laṅ) of bhū

Imperfect tense, 3rd person plural

From verb root `bhū` (class 1, `bhavati`).

Root: bhū (class 1)

महाशब्दः (mahāśabdaḥ) - a great sound (a great sound, a loud noise)

(noun)

Nominative, masculine, singular of mahāśabda

mahāśabda - great sound, loud noise

Karmadhāraya compound: `mahā` (great) + `śabda` (sound).

Compound type : karmadhāraya (mahā+śabda)

• mahā – great, large, mighty
  adjective
  Stem form of `mahat`, used as the first part of compounds.
• śabda – sound, noise, word
  noun (masculine)

Note: Subject of the verb `abhavan` (despite the number mismatch).

तुमुलः (tumulaḥ) - tumultuous (tumultuous, noisy, agitated)

(adjective)

Nominative, masculine, singular of tumula

tumula - tumultuous, noisy, agitated, terrible

Note: Agrees with `mahāśabdaḥ`.

लोमहर्षणः (lomaharṣaṇaḥ) - hair-raising (hair-raising, thrilling, causing goosebumps)

(adjective)

Nominative, masculine, singular of lomaharṣaṇa

lomaharṣaṇa - hair-raising, thrilling, causing the hair to stand on end

Tatpuruṣa compound: `loman` (hair) + `harṣaṇa` (causing to stand erect, thrilling).

Compound type : tatpuruṣa (loman+harṣaṇa)

• loman – hair (on the body)
  noun (neuter)
• harṣaṇa – causing to stand erect, thrilling, gladdening
  adjective (masculine)
  Present active participle (causative) or noun of action
  Derived from the root `hṛṣ` (to be excited, thrill) in its causative form `harṣayati`.
  Root: hṛṣ (class 1)

Note: Agrees with `mahāśabdaḥ`.

समावृण्वन् (samāvṛṇvan) - filling (covering, encompassing, filling)

(adjective)

Nominative, masculine, singular of samāvṛṇvat

samāvṛṇvat - covering, encompassing, filling

Present Active Participle

Formed from the root `vṛ` (to cover, enclose) with prefixes `sam` and `ā`. The verb is from class 5 (`vṛṇoti`).

Prefixes: sam+ā

Root: vṛ (class 5)

दिशः (diśaḥ) - directions (directions, quarters)

(noun)

Accusative, feminine, plural of diś

diś - direction, quarter, region

Note: Object of the participle `samāvṛṇvan`.

सर्वाः (sarvāḥ) - all (all, every)

(pronoun)

Accusative, feminine, plural of sarva

sarva - all, every, whole, entire

Universal pronoun, often used as an adjective.

Note: Agrees with `diśaḥ`.

महेन्द्राशनि-निस्वनः (mahendrāśani-nisvanaḥ) - a sound like the crash of Indra's thunderbolt (sounding like Indra's thunderbolt)

(adjective)

Nominative, masculine, singular of mahendrāśani-nisvana

mahendrāśani-nisvana - having the sound (nisvana) of Indra's thunderbolt (mahendrāśani)

Bahuvrīhi compound, meaning 'whose sound is like Indra's thunderbolt'.

Compound type : bahuvrīhi (mahendrāśani+nisvana)

• mahendrāśani – Indra's thunderbolt
  noun (masculine)
  Tatpuruṣa compound: `mahendra` (Great Indra) + `aśani` (thunderbolt).
• nisvana – sound, noise, roar
  noun (masculine)
  From root `svan` (to sound) with prefix `ni`.
  Prefix: ni
  Root: svan (class 1)

Note: Agrees with `mahāśabdaḥ`.