महाभारतः mahābhārataḥ - book-1, chapter-68, verse-2

त्रिषु वर्षेषु पूर्णेषु दिप्तानलसमद्युतिम् ।
रूपौदार्यगुणोपेतं दौःषन्तिं जनमेजय ॥२॥

2. triṣu varṣeṣu pūrṇeṣu diptānalasamadyutim ,
rūpaudāryaguṇopetaṁ dauḥṣantiṁ janamejaya.

2. triṣu varṣeṣu pūrṇeṣu dīptānalasamadyutim
rūpaudāryaguṇopetam dauḥṣantim janamejaya

2. O Janamejaya, when three years were complete, the son of Duṣyanta, who shone with the brilliance of a blazing fire and was endowed with beauty, generosity, and other noble qualities, (was so manifest).

Words meanings summery:

• त्रिषु (triṣu) - in three (years) (in three, among three)

• वर्षेषु (varṣeṣu) - in three years (in years, during years)

• पूर्णेषु (pūrṇeṣu) - having been completed (complete, full, fulfilled)

• दीप्तानलसमद्युतिम् (dīptānalasamadyutim) - shining with the brilliance of a blazing fire (having splendor like a blazing fire)

• रूपौदार्यगुणोपेतम् (rūpaudāryaguṇopetam) - endowed with beauty, generosity, and other noble qualities (endowed with the qualities of beauty and generosity)

• दौःषन्तिम् (dauḥṣantim) - the son of Duṣyanta (son of Duṣyanta, belonging to Duṣyanta)

• जनमेजय (janamejaya) - O Janamejaya (the listener) (O Janamejaya (name of a king))

Words meanings and morphology

त्रिषु (triṣu) - in three (years) (in three, among three)

(numeral)

Note: Agrees with `varṣeṣu`.

वर्षेषु (varṣeṣu) - in three years (in years, during years)

(noun)

Locative, neuter, plural of varṣa

varṣa - year, rain, season

Root: vṛṣ (class 1)

Note: Part of locative absolute.

पूर्णेषु (pūrṇeṣu) - having been completed (complete, full, fulfilled)

(adjective)

Locative, neuter, plural of pūrṇa

pūrṇa - full, complete, filled, finished

Past Passive Participle

Derived from root √pṛ (to fill, complete).

Root: pṛ (class 9)

Note: Part of locative absolute.

दीप्तानलसमद्युतिम् (dīptānalasamadyutim) - shining with the brilliance of a blazing fire (having splendor like a blazing fire)

(adjective)

Accusative, masculine, singular of dīptānalasamadyuti

dīptānalasamadyuti - having brilliance like a blazing fire

Compound. 'dīpta' (blazing) + 'anala' (fire) + 'sama' (like) + 'dyuti' (splendor).

Compound type : bahuvrīhi (dīpta+anala+sama+dyuti)

• dīpta – blazing, shining, ignited
  adjective (masculine)
  Past Passive Participle
  Derived from root √dīp (to shine, blaze).
  Root: dīp (class 4)
• anala – fire, Agni
  noun (masculine)
  Prefix: an
  Root: al (class 8)
• sama – like, equal, similar, same
  adjective (masculine)
• dyuti – splendor, brilliance, light, glow
  noun (feminine)
  Derived from √dyut (to shine).
  Root: dyut (class 1)

रूपौदार्यगुणोपेतम् (rūpaudāryaguṇopetam) - endowed with beauty, generosity, and other noble qualities (endowed with the qualities of beauty and generosity)

(adjective)

Accusative, masculine, singular of rūpaudāryaguṇopeta

rūpaudāryaguṇopeta - endowed with qualities of beauty and generosity

Compound. 'rūpa' (beauty) + 'audārya' (generosity) + 'guṇa' (quality) + 'upeta' (endowed with).

Compound type : tatpuruṣa (rūpa+audārya+guṇa+upeta)

• rūpa – form, beauty, shape, appearance
  noun (neuter)
• audārya – generosity, nobility, magnanimity
  noun (neuter)
  Derived from udāra (noble, generous).
• guṇa – quality, virtue, attribute, constituent (of prakṛti)
  noun (masculine)
• upeta – endowed with, possessed of, accompanied by
  adjective/PPP (masculine)
  Past Passive Participle
  Derived from upa-√i (to go to, reach).
  Prefix: upa
  Root: i (class 2)

दौःषन्तिम् (dauḥṣantim) - the son of Duṣyanta (son of Duṣyanta, belonging to Duṣyanta)

(noun)

Accusative, masculine, singular of dauḥṣanti

dauḥṣanti - descendant of Duṣyanta, son of Duṣyanta

Patronymic derivation from Duṣyanta.

Note: This is Bharata.

जनमेजय (janamejaya) - O Janamejaya (the listener) (O Janamejaya (name of a king))

(proper noun)

Vocative, masculine, singular of janamejaya

janamejaya - name of a king, son of Parīkṣit

Compound, 'jana' (people) + 'emī' (aorist of i, to go) or root √mij (to cleanse). Likely 'he who makes people tremble' or 'he who purifies people'.

Note: The listener to whom Vaiśampāyana is narrating.