महाभारतः mahābhārataḥ - book-13, chapter-15, verse-18

पृथिवी चान्तरिक्षं च नक्षत्राणि ग्रहास्तथा ।
मासार्धमासा ऋतवो रात्र्यः संवत्सराः क्षणाः ॥१८॥

18. pṛthivī cāntarikṣaṁ ca nakṣatrāṇi grahāstathā ,
māsārdhamāsā ṛtavo rātryaḥ saṁvatsarāḥ kṣaṇāḥ.

18. pṛthivī ca antarikṣam ca nakṣatrāṇi grahāḥ tathā
māsārdhamāsāḥ ṛtavaḥ rātryaḥ saṃvatsarāḥ kṣaṇāḥ

18. pṛthivī ca antarikṣam ca nakṣatrāṇi grahāḥ tathā
māsārdhamāsāḥ ṛtavaḥ rātryaḥ saṃvatsarāḥ kṣaṇāḥ

18. And the earth, and the atmosphere, constellations and planets likewise; months, half-months, seasons, nights, years, and moments.

Words meanings summery:

• पृथिवी (pṛthivī) - earth, the earth planet

• च (ca) - and

• अन्तरिक्षम् (antarikṣam) - atmosphere, sky, space between heaven and earth

• च (ca) - and

• नक्षत्राणि (nakṣatrāṇi) - constellations, stars, lunar mansions

• ग्रहाः (grahāḥ) - planets, celestial bodies

• तथा (tathā) - similarly, and

• मासार्धमासाः (māsārdhamāsāḥ) - months and half-months

• ऋतवः (ṛtavaḥ) - seasons

• रात्र्यः (rātryaḥ) - nights

• संवत्सराः (saṁvatsarāḥ) - years

• क्षणाः (kṣaṇāḥ) - moments, instants

Words meanings and morphology

पृथिवी (pṛthivī) - earth, the earth planet

(noun)

Nominative, feminine, singular of pṛthivī

pṛthivī - earth, ground, soil

च (ca) - and

(indeclinable)

अन्तरिक्षम् (antarikṣam) - atmosphere, sky, space between heaven and earth

(noun)

Nominative, neuter, singular of antarikṣa

antarikṣa - atmosphere, sky, mid-region, space

च (ca) - and

(indeclinable)

नक्षत्राणि (nakṣatrāṇi) - constellations, stars, lunar mansions

(noun)

Nominative, neuter, plural of nakṣatra

nakṣatra - star, constellation, lunar mansion

ग्रहाः (grahāḥ) - planets, celestial bodies

(noun)

Nominative, masculine, plural of graha

graha - planet, seizing, grasping, demon

Root: grah (class 9)

तथा (tathā) - similarly, and

(indeclinable)

मासार्धमासाः (māsārdhamāsāḥ) - months and half-months

(noun)

Nominative, masculine, plural of māsārdhamāsa

māsārdhamāsa - month and half-month

Compound type : dvandva (māsa+ardhamāsa)

• māsa – month
  noun (masculine)
• ardhamāsa – half-month
  noun (masculine)

ऋतवः (ṛtavaḥ) - seasons

(noun)

Nominative, masculine, plural of ṛtu

ṛtu - season, fixed time, period

रात्र्यः (rātryaḥ) - nights

(noun)

Nominative, feminine, plural of rātri

rātri - night

संवत्सराः (saṁvatsarāḥ) - years

(noun)

Nominative, masculine, plural of saṃvatsara

saṁvatsara - year, a full year

क्षणाः (kṣaṇāḥ) - moments, instants

(noun)

Nominative, masculine, plural of kṣaṇa

kṣaṇa - instant, moment, very short period