महाभारतः mahābhārataḥ - book-5, chapter-66, verse-12

कालचक्रं जगच्चक्रं युगचक्रं च केशवः ।
आत्मयोगेन भगवान्परिवर्तयतेऽनिशम् ॥१२॥

12. kālacakraṁ jagaccakraṁ yugacakraṁ ca keśavaḥ ,
ātmayogena bhagavānparivartayate'niśam.

12. kālacakram jagaccakram yugacakram ca keśavaḥ
ātmayogena bhagavān parivartayate aniśam

12. The Lord (Bhagavan) Keshava, by His own divine power (ātmayoga), ceaselessly causes the wheel of time, the wheel of the universe, and the wheel of the ages to revolve.

Words meanings summery:

• कालचक्रम् (kālacakram) - wheel of time

• जगच्चक्रम् (jagaccakram) - wheel of the world/universe

• युगचक्रम् (yugacakram) - wheel of the ages/yugas

• च (ca) - and, also

• केशवः (keśavaḥ) - Keshava, one with long hair, a name of Vishnu/Krishna

• आत्मयोगेन (ātmayogena) - by one's own divine power, by one's own yoga (divine power/mystic power)

• भगवान् (bhagavān) - Lord, worshipful, divine

• परिवर्तयते (parivartayate) - causes to revolve, keeps rotating, makes to turn

• अनिशम् (aniśam) - ceaselessly, constantly, always

Words meanings and morphology

कालचक्रम् (kālacakram) - wheel of time

(noun)

Accusative, neuter, singular of kālacakra

kālacakra - wheel of time, cycle of time

Compound type : tatpuruṣa (kāla+cakra)

• kāla – time, duration
  noun (masculine)
• cakra – wheel, discus, circle, realm
  noun (neuter)

जगच्चक्रम् (jagaccakram) - wheel of the world/universe

(noun)

Accusative, neuter, singular of jagaccakra

jagaccakra - wheel of the world, cycle of the universe

Compound type : tatpuruṣa (jagat+cakra)

• jagat – world, universe, moving
  noun (neuter)
  From root gam (to go) + kvip suffix.
  Root: gam (class 1)
• cakra – wheel, discus, circle, realm
  noun (neuter)

युगचक्रम् (yugacakram) - wheel of the ages/yugas

(noun)

Accusative, neuter, singular of yugacakra

yugacakra - cycle of ages, wheel of yugas

Compound type : tatpuruṣa (yuga+cakra)

• yuga – age, epoch, yuga, pair, yoke
  noun (neuter)
• cakra – wheel, discus, circle, realm
  noun (neuter)

च (ca) - and, also

(indeclinable)

केशवः (keśavaḥ) - Keshava, one with long hair, a name of Vishnu/Krishna

(proper noun)

Nominative, masculine, singular of keśava

keśava - Keshava (an epithet of Vishnu or Krishna), one who has beautiful or long hair

आत्मयोगेन (ātmayogena) - by one's own divine power, by one's own yoga (divine power/mystic power)

(noun)

Instrumental, masculine, singular of ātmayoga

ātmayoga - connection with the self, self-contemplation, one's own yoga (divine power/mystic power)

Compound type : tatpuruṣa (ātman+yoga)

• ātman – self, soul, spirit, individual soul (ātman)
  noun (masculine)
  Root: an (class 2)
• yoga – union, conjunction, discipline, mystic power, spiritual practice (yoga)
  noun (masculine)
  From root yuj + ghaÑ suffix.
  Root: yuj (class 7)

भगवान् (bhagavān) - Lord, worshipful, divine

(proper noun)

Nominative, masculine, singular of bhagavat

bhagavat - worshipful, divine, fortunate, prosperous, Lord (epithet for gods like Vishnu, Shiva)

From bhaga + matup suffix.

परिवर्तयते (parivartayate) - causes to revolve, keeps rotating, makes to turn

(verb)

3rd person , singular, middle, present (laṭ) of parivartaya

Causal form of vartate

From root vṛt with prefix pari, causal suffix -aya.

Prefix: pari

Root: vṛt (class 1)

अनिशम् (aniśam) - ceaselessly, constantly, always

(indeclinable)

a (not) + niś (night) + adverbial suffix.

Compound type : avyayībhāva (a+niś)

• a – not, un-, non-
  indeclinable
  Negative particle.
• niś – night
  noun (feminine)