महाभारतः mahābhārataḥ - book-3, chapter-168, verse-12

ततो वर्षं प्रादुरभूत्सुमहल्लोमहर्षणम् ।
अस्त्राणां घोररूपाणामग्नेर्वायोस्तथाश्मनाम् ॥१२॥

12. tato varṣaṁ prādurabhūtsumahallomaharṣaṇam ,
astrāṇāṁ ghorarūpāṇāmagnervāyostathāśmanām.

12. tataḥ varṣam prādurabhūt sumahat lomaharṣaṇam
astrāṇām ghorarūpāṇām agneḥ vāyoḥ tathā aśmanām

12. Then a tremendous, terrifying downpour manifested, consisting of dreadful weapons, fire, wind, and stones.

Words meanings summery:

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

• वर्षम् (varṣam) - rain, shower, downpour

• प्रादुरभूत् (prādurabhūt) - it appeared, it manifested

• सुमहत् (sumahat) - very great, tremendous

• लोमहर्षणम् (lomaharṣaṇam) - hair-raising, horrifying, terrifying

• अस्त्राणाम् (astrāṇām) - of weapons, of missiles

• घोररूपाणाम् (ghorarūpāṇām) - of terrifying forms, of dreadful appearance

• अग्नेः (agneḥ) - of fire

• वायोः (vāyoḥ) - of the wind

• तथा (tathā) - and, likewise, thus

• अश्मनाम् (aśmanām) - of stones

Words meanings and morphology

ततः (tataḥ) - then, thence, from that

(indeclinable)

वर्षम् (varṣam) - rain, shower, downpour

(noun)

Nominative, neuter, singular of varṣa

varṣa - rain, shower, year

Root: vṛṣ (class 1)

प्रादुरभूत् (prādurabhūt) - it appeared, it manifested

(verb)

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

Root: bhū (class 1)

Note: Formed with the prefix prādus (manifest, visible).

सुमहत् (sumahat) - very great, tremendous

(adjective)

Nominative, neuter, singular of sumahat

sumahat - very great, immense

Compound type : avyayībhāva (su+mahat)

• su – good, well, very
  prefix
• mahat – great, large, important
  adjective (neuter)

Note: Agrees with varṣam.

लोमहर्षणम् (lomaharṣaṇam) - hair-raising, horrifying, terrifying

(adjective)

Nominative, neuter, singular of lomaharṣaṇa

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

From loman (hair) and harṣaṇa (causing excitement/bristling)

Compound type : tatpuruṣa (loman+harṣaṇa)

• loman – hair, down
  noun (neuter)
• harṣaṇa – causing joy, exciting, causing to bristle
  adjective (neuter)
  Causal Noun
  From causal of root hṛṣ
  Root: hṛṣ (class 1)

Note: Agrees with varṣam.

अस्त्राणाम् (astrāṇām) - of weapons, of missiles

(noun)

Genitive, neuter, plural of astra

astra - weapon, missile

Root: as (class 4)

घोररूपाणाम् (ghorarūpāṇām) - of terrifying forms, of dreadful appearance

(adjective)

Genitive, neuter, plural of ghorarūpa

ghorarūpa - terrifying form, dreadful appearance

Compound type : bahuvrīhi (ghora+rūpa)

• ghora – dreadful, terrible, fearful
  adjective
  Root: ghūr (class 1)
• rūpa – form, shape, appearance
  noun (neuter)
  Root: rūp (class 10)

Note: Agrees with astrāṇām.

अग्नेः (agneḥ) - of fire

(noun)

Genitive, masculine, singular of agni

agni - fire, god of fire

वायोः (vāyoḥ) - of the wind

(noun)

Genitive, masculine, singular of vāyu

vāyu - wind, air, god of wind

Root: vā (class 2)

तथा (tathā) - and, likewise, thus

(indeclinable)

अश्मनाम् (aśmanām) - of stones

(noun)

Genitive, masculine, plural of aśman

aśman - stone, rock