महाभारतः mahābhārataḥ - book-1, chapter-90, verse-12

जनमेजयः खल्वनन्तां नामोपयेमे माधवीम् ।
तस्यामस्य जज्ञे प्राचिन्वान् ।
यः प्राचीं दिशं जिगाय यावत्सूर्योदयात् ।
ततस्तस्य प्राचिन्वत्वम् ॥१२॥

12. janamejayaḥ khalvanantāṁ nāmopayeme mādhavīm ,
tasyāmasya jajñe prācinvān ,
yaḥ prācīṁ diśaṁ jigāya yāvatsūryodayāt ,
tatastasya prācinvatvam.

12. janamejayaḥ khalu anantām nāma upayeme
mādhavīm tasyām asya jajñe
prācinvān yaḥ prācīm diśam jigāya yāvat
sūryodayāt tataḥ tasya prācinvatvam

12. Janamejaya indeed married a woman of the Madhu lineage named Anantā. From her, Prācinvān was born to him. He conquered the eastern direction all the way to the sunrise. Because of this, he became known as Prācinvān.

Words meanings summery:

• जनमेजयः (janamejayaḥ) - King Janamejaya (Janamejaya (a king's name))

• खलु (khalu) - indeed, certainly

• अनन्ताम् (anantām) - named Anantā (Ananta (name), endless, infinite)

• नाम (nāma) - by the name (of) (name, by name, indeed)

• उपयेमे (upayeme) - married, obtained

• माधवीम् (mādhavīm) - a woman from the Madhu lineage (woman of the Madhu family, spring flower)

• तस्याम् (tasyām) - from her (referring to the mother) (in her, from her)

• अस्य (asya) - to him (Janamejaya) (of him, to him)

• जज्ञे (jajñe) - was born, originated

• प्राचिन्वान् (prācinvān) - Prācinvān (name), one who conquered the East

• यः (yaḥ) - who, which

• प्राचीम् (prācīm) - the eastern (eastern, to the East)

• दिशम् (diśam) - direction, quarter

• जिगाय (jigāya) - conquered, won

• यावत् (yāvat) - as far as, as long as, until

• सूर्योदयात् (sūryodayāt) - from sunrise, from the rising of the sun

• ततः (tataḥ) - from that (deed) (from that, thence, therefore)

• तस्य (tasya) - his (Prācinvān's) (of him, his)

• प्राचिन्वत्वम् (prācinvatvam) - the state of being Prācinvān, or the name Prācinvān (the state of being Prācinvat, the name Prācinvat)

Words meanings and morphology

जनमेजयः (janamejayaḥ) - King Janamejaya (Janamejaya (a king's name))

(proper noun)

Nominative, masculine, singular of janamejaya

janamejaya - Janamejaya (a proper noun, name of a king)

खलु (khalu) - indeed, certainly

(indeclinable)

अनन्ताम् (anantām) - named Anantā (Ananta (name), endless, infinite)

(proper noun)

Accusative, feminine, singular of anantā

anantā - Anantā (a proper noun, name of a woman), endless, infinite (feminine form)

नाम (nāma) - by the name (of) (name, by name, indeed)

(noun)

Accusative, neuter, singular of nāman

nāman - name, appellation, fame, reputation

Note: Used adverbially to mean 'named' or 'by name'.

उपयेमे (upayeme) - married, obtained

(verb)

3rd person , singular, middle, past perfect (liṭ) of upayam

Prefix: upa

Root: yam (class 1)

माधवीम् (mādhavīm) - a woman from the Madhu lineage (woman of the Madhu family, spring flower)

(noun)

Accusative, feminine, singular of mādhavī

mādhavī - belonging to the Madhu family, a kind of plant (creeper), wife of Madhu, a goddess

तस्याम् (tasyām) - from her (referring to the mother) (in her, from her)

(pronoun)

Locative, feminine, singular of tad

tad - that, she, it

अस्य (asya) - to him (Janamejaya) (of him, to him)

(pronoun)

Genitive, masculine, singular of idam

idam - this, he, it

Note: Used here in a dative-like sense ('to him').

जज्ञे (jajñe) - was born, originated

(verb)

3rd person , singular, middle, past perfect (liṭ) of jan

Root: jan (class 4)

प्राचिन्वान् (prācinvān) - Prācinvān (name), one who conquered the East

(proper noun)

Nominative, masculine, singular of prācinvat

prācinvat - one who possesses the East, facing East, a proper noun (name of a king)

यः (yaḥ) - who, which

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what (relative pronoun)

प्राचीम् (prācīm) - the eastern (eastern, to the East)

(adjective)

Accusative, feminine, singular of prācī

prācī - eastern, anterior (feminine form of prāc)

दिशम् (diśam) - direction, quarter

(noun)

Accusative, feminine, singular of diś

diś - direction, quarter of the world, region, point of the compass

जिगाय (jigāya) - conquered, won

(verb)

3rd person , singular, active, past perfect (liṭ) of ji

Root: ji (class 1)

यावत् (yāvat) - as far as, as long as, until

(indeclinable)

सूर्योदयात् (sūryodayāt) - from sunrise, from the rising of the sun

(noun)

Ablative, masculine, singular of sūryodaya

sūryodaya - sunrise, rising of the sun

Compound type : tatpuruṣa (sūrya+udaya)

• sūrya – sun, the sun-god
  noun (masculine)
• udaya – rising, ascent, appearance, dawn
  noun (masculine)
  Prefix: ud
  Root: i (class 2)

ततः (tataḥ) - from that (deed) (from that, thence, therefore)

(indeclinable)

तस्य (tasya) - his (Prācinvān's) (of him, his)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, it

प्राचिन्वत्वम् (prācinvatvam) - the state of being Prācinvān, or the name Prācinvān (the state of being Prācinvat, the name Prācinvat)

(noun)

Nominative, neuter, singular of prācinvatva

prācinvatva - the state or quality of being prācinvat