योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-91, verse-16

चन्द्रार्कादितरङ्गान्तरजडं पङ्किलो महान् ।
बृहद्ब्रह्माण्डखातस्थो नित्यमेकार्णवोऽक्षयः ॥ १६ ॥

candrārkāditaraṅgāntarajaḍaṃ paṅkilo mahān ,
bṛhadbrahmāṇḍakhātastho nityamekārṇavo'kṣayaḥ 16

16. candrārkāditaragāntarajadam paṅkilaḥ mahān
bṛhadbrahmāṇḍakhātasthaḥ nityam ekārṇavaḥ akṣayaḥ

16. ekārṇavaḥ nityam akṣayaḥ candrārkāditaragāntarajadam
paṅkilaḥ mahān bṛhadbrahmāṇḍakhātasthaḥ

16. An inert quality exists within the waves of the moon, sun, and other celestial bodies. It is muddy, vast, situated in the great cosmic pit (brahmāṇḍa-khāta), and eternally the imperishable single ocean (ekārṇava).

Words meanings summery:

• चन्द्रार्कादितरगान्तरजदम् (candrārkāditaragāntarajadam) - inert within the waves of the moon, sun, and so on; that which is inert within the waves of the moon, sun, etc.

• पङ्किलः (paṅkilaḥ) - muddy, turbid, dirty

• महान् (mahān) - great, large, vast, mighty

• बृहद्ब्रह्माण्डखातस्थः (bṛhadbrahmāṇḍakhātasthaḥ) - situated in the great cosmic pit/chasm

• नित्यम् (nityam) - eternally, constantly, always

• एकार्णवः (ekārṇavaḥ) - the single ocean, the cosmic ocean at dissolution

• अक्षयः (akṣayaḥ) - imperishable, undiminishing, eternal

Words meanings and morphology

चन्द्रार्कादितरगान्तरजदम् (candrārkāditaragāntarajadam) - inert within the waves of the moon, sun, and so on; that which is inert within the waves of the moon, sun, etc.

(adjective)

Nominative, neuter, singular of candrārkāditaragāntarajaḍa

candrārkāditaragāntarajaḍa - inert within the waves of moon, sun, etc.

Compound type : Tatpurusha (candra+arka+ādi+taraṅga+antara+jaḍa)

• candra – moon
  noun (masculine)
• arka – sun, ray, praise
  noun (masculine)
• ādi – beginning, first, et cetera, and so on
  indeclinable
• taraṅga – wave, ripple
  noun (masculine)
• antara – inside, within, interval, difference
  indeclinable (neuter)
• jaḍa – inert, motionless, dull, stupid, cold
  adjective (neuter)

Note: Refers to an inert quality or an inert thing. Its neuter gender creates a slight grammatical tension with subsequent masculine adjectives of ekārṇavaḥ.

पङ्किलः (paṅkilaḥ) - muddy, turbid, dirty

(adjective)

Nominative, masculine, singular of paṅkila

paṅkila - muddy, turbid, miry

Derived from paṅka (mud) + ila suffix.

महान् (mahān) - great, large, vast, mighty

(adjective)

Nominative, masculine, singular of mahat

mahat - great, large, vast, mighty, important

बृहद्ब्रह्माण्डखातस्थः (bṛhadbrahmāṇḍakhātasthaḥ) - situated in the great cosmic pit/chasm

(adjective)

Nominative, masculine, singular of bṛhadbrahmāṇḍakhātastha

bṛhadbrahmāṇḍakhātastha - situated in the great cosmic pit/chasm

Compound type : Tatpurusha (bṛhat+brahmāṇḍa+khāta+stha)

• bṛhat – great, large, vast
  adjective (neuter)
• brahmāṇḍa – cosmic egg, universe
  noun (neuter)
• khāta – pit, chasm, hollow, ditch
  noun (neuter)
  Past Passive Participle
  From root khan.
  Root: khan (class 1)
• stha – standing, situated, located in
  adjective (masculine)
  Nominalizing suffix from root sthā
  Derived from root sthā (to stand).
  Root: sthā (class 1)

नित्यम् (nityam) - eternally, constantly, always

(indeclinable)

Note: Here functions as an adverb, modifying the state of being ekārṇavaḥ.

एकार्णवः (ekārṇavaḥ) - the single ocean, the cosmic ocean at dissolution

(noun)

Nominative, masculine, singular of ekārṇava

ekārṇava - the single ocean (ekārṇava), the universal deluge

eka (one) + arṇava (ocean).

Compound type : Karmadharaya (eka+arṇava)

• eka – one, single, sole
  numeral (masculine)
• arṇava – ocean, sea
  noun (masculine)

अक्षयः (akṣayaḥ) - imperishable, undiminishing, eternal

(adjective)

Nominative, masculine, singular of akṣaya

akṣaya - imperishable, eternal, undecaying, undiminishing

Negative prefix a + kṣaya (decay, destruction).

Compound type : Avyayibhava (a+kṣaya)

• a – not, un-
  indeclinable
  Negative prefix.
• kṣaya – decay, destruction, loss, end
  noun (masculine)
  From root kṣi (to destroy).
  Root: kṣi (class 1)