योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-24, verse-12

परितः पूरितव्योम्नां मेर्वादिकुलभूभृताम् ।
पद्मरागतटोद्द्योतैः कल्पज्वालोपमोदरम् ॥ १२ ॥

paritaḥ pūritavyomnāṃ mervādikulabhūbhṛtām ,
padmarāgataṭoddyotaiḥ kalpajvālopamodaram 12

12. paritaḥ pūritavyomnām mervādikulabhūbhṛtām
padmarāgataṭoddyotaiḥ kalpajvālupamodaram

12. paritaḥ pūritavyomnām mervādikulabhūbhṛtām
kalpajvālupamodaram padmarāgataṭoddyotaiḥ

12. All around it are the Meru and other principal mountains, filling the sky. (The central entity) has an interior resembling the destructive flames of the cosmic dissolution (kalpa), and it shines with the radiance from ruby-red slopes.

Words meanings summery:

• परितः (paritaḥ) - all around, on every side

• पूरितव्योम्नाम् (pūritavyomnām) - of those filling the sky/space

• मेर्वादिकुलभूभृताम् (mervādikulabhūbhṛtām) - of Meru and other chief mountains

• पद्मरागतटोद्द्योतैः (padmarāgataṭoddyotaiḥ) - by the radiance/gleam of ruby-red slopes

• कल्पज्वालुपमोदरम् (kalpajvālupamodaram) - having an interior resembling the flames of cosmic dissolution

Words meanings and morphology

परितः (paritaḥ) - all around, on every side

(indeclinable)

पूरितव्योम्नाम् (pūritavyomnām) - of those filling the sky/space

(adjective)

Genitive, masculine, plural of pūritavyoman

pūritavyoman - filling the sky, sky-pervading

Compound type : bahuvrīhi (pūrita+vyoman)

• pūrita – filled, full
  adjective (neuter)
  Past Passive Participle
  Derived from root `pṛ` (to fill) with suffix `kta`.
  Root: pṛ (class 1)
• vyoman – sky, atmosphere, space
  noun (neuter)

Note: Refers to the mountains described.

मेर्वादिकुलभूभृताम् (mervādikulabhūbhṛtām) - of Meru and other chief mountains

(noun)

Genitive, masculine, plural of mervādikulabhūbhṛt

mervādikulabhūbhṛt - chief mountains like Meru, principal mountains headed by Meru

Compound type : tatpuruṣa (meru+ādi+kula+bhūbhṛt)

• meru – Mount Meru (mythical cosmic mountain)
  proper noun (masculine)
• ādi – beginning, etcetera, and so forth, chief
  noun (masculine)
• kula – family, lineage, race, chief
  noun (neuter)
• bhūbhṛt – mountain, king (lit. earth-bearer)
  noun (masculine)
  Derived from `bhū` (earth) + `bhṛt` (bearer), from root `bhṛ` (to bear).
  Root: bhṛ (class 3)

Note: Refers to the category of mountains.

पद्मरागतटोद्द्योतैः (padmarāgataṭoddyotaiḥ) - by the radiance/gleam of ruby-red slopes

(noun)

Instrumental, masculine, plural of padmarāgataṭoddyota

padmarāgataṭoddyota - radiance of ruby slopes, gleam from ruby-colored banks

Compound type : tatpuruṣa (padmarāga+taṭa+uddyota)

• padmarāga – ruby (lit. lotus-color)
  noun (masculine)
• taṭa – bank, shore, slope, side
  noun (masculine)
• uddyota – radiance, gleam, light
  noun (masculine)
  Derived from `ut` + `dyut` (to shine) + `a` suffix.
  Prefix: ut
  Root: dyut (class 1)

Note: Instrumental of description or means.

कल्पज्वालुपमोदरम् (kalpajvālupamodaram) - having an interior resembling the flames of cosmic dissolution

(adjective)

neuter, singular of kalpajvālupamodara

kalpajvālupamodara - whose interior is like the fire of destruction, having a belly similar to the flames of an eon's end

Compound type : bahuvrīhi (kalpa+jvāla+upama+udara)

• kalpa – eon, cosmic age, period of creation/destruction
  noun (masculine)
• jvāla – flame, blaze, fire
  noun (feminine)
• upama – likeness, comparison, similar, resembling
  adjective (masculine)
• udara – belly, interior, inside, womb
  noun (neuter)

Note: Bahuvrīhi compound, describes the characteristic of the subject.