वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-4, verse-18

विद्युत्केशो हेतिपुत्रः प्रदीप्ताग्निसमप्रभः ।
व्यवर्धत महातेजास्तोयमध्य इवाम्बुजम् ॥१८॥

18. vidyutkeśo hetiputraḥ pradīptāgnisamaprabhaḥ ,
vyavardhata mahātejāstoyamadhya ivāmbujam.

18. vidyutkeśaḥ hetiputraḥ pradīptāgnisamaprabhaḥ
vyavardhata mahātejāḥ toyamadhye iva ambujam

18. hetiputraḥ vidyutkeśaḥ mahātejāḥ pradīptāgnisamaprabhaḥ
toyamadhye ambujam iva vyavardhata

18. Vidyutkeśa, the son of Heti, greatly radiant and with a splendor like a blazing fire, grew like a lotus in water.

Words meanings summery:

• विद्युत्केशः (vidyutkeśaḥ) - Vidyutkeśa (the son of Heti) (Vidyutkeśa (proper name))

• हेतिपुत्रः (hetiputraḥ) - son of Heti

• प्रदीप्ताग्निसमप्रभः (pradīptāgnisamaprabhaḥ) - with a splendor like a blazing fire (having a splendor like a blazing fire)

• व्यवर्धत (vyavardhata) - grew (grew, prospered, increased)

• महातेजाः (mahātejāḥ) - greatly radiant (greatly radiant, highly energetic, very powerful)

• तोयमध्ये (toyamadhye) - in water (in the middle of water)

• इव (iva) - like (like, as if)

• अम्बुजम् (ambujam) - a lotus (lotus, born from water)

Words meanings and morphology

विद्युत्केशः (vidyutkeśaḥ) - Vidyutkeśa (the son of Heti) (Vidyutkeśa (proper name))

(proper noun)

Nominative, masculine, singular of vidyutkeśa

vidyutkeśa - Vidyutkeśa (proper name)

Compound type : bahuvrīhi (vidyut+keśa)

• vidyut – lightning
  noun (feminine)
• keśa – hair, mane
  noun (masculine)

हेतिपुत्रः (hetiputraḥ) - son of Heti

(noun)

Nominative, masculine, singular of hetiputra

hetiputra - son of Heti

Compound type : tatpuruṣa (heti+putra)

• heti – Heti (proper name)
  proper noun (masculine)
• putra – son
  noun (masculine)

प्रदीप्ताग्निसमप्रभः (pradīptāgnisamaprabhaḥ) - with a splendor like a blazing fire (having a splendor like a blazing fire)

(adjective)

Nominative, masculine, singular of pradīptāgnisamaprabha

pradīptāgnisamaprabha - having a splendor like a blazing fire

Compound type : bahuvrīhi (pradīpta+agni+sama+prabha)

• pradīpta – blazing, ignited
  adjective
  Past Passive Participle
  From root dīp (to shine) with prefix pra
  Prefix: pra
  Root: dīp (class 4)
• agni – fire
  noun (masculine)
• sama – like, similar, equal
  adjective
• prabha – splendor, light
  noun (masculine)
  From pra-bhā
  Prefix: pra
  Root: bhā

व्यवर्धत (vyavardhata) - grew (grew, prospered, increased)

(verb)

3rd person , singular, middle, past imperfect (laṅ) of vṛdh

Imperfect Middle

Root vṛdh, class 1, with upasarga vi

Prefix: vi

Root: vṛdh (class 1)

महातेजाः (mahātejāḥ) - greatly radiant (greatly radiant, highly energetic, very powerful)

(adjective)

Nominative, masculine, singular of mahātejas

mahātejas - greatly radiant, very powerful

Compound type : bahuvrīhi (mahā+tejas)

• mahā – great, large
  adjective
• tejas – splendor, energy, prowess
  noun (neuter)
  Root: tij

तोयमध्ये (toyamadhye) - in water (in the middle of water)

(noun)

Locative, neuter, singular of toyamadhya

toyamadhya - middle of water

Compound type : tatpuruṣa (toya+madhya)

• toya – water
  noun (neuter)
  Root: tu
• madhya – middle, center
  noun (neuter)

इव (iva) - like (like, as if)

(indeclinable)

अम्बुजम् (ambujam) - a lotus (lotus, born from water)

(noun)

Accusative, neuter, singular of ambuja

ambuja - lotus, born from water

From ambu (water) and ja (born)

Compound type : tatpuruṣa (ambu+ja)

• ambu – water
  noun (neuter)
• ja – born, produced
  adjective
  derived from root jan
  Suffix -ja from root jan
  Root: jan (class 4)