योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-49, verse-51

घनीभूता घनत्वेन चिद्घना गगनाङ्गणे ।
नानापदार्थरूपेण स्फुरति स्वात्मनात्मनि ॥ ५१ ॥

ghanībhūtā ghanatvena cidghanā gaganāṅgaṇe ,
nānāpadārtharūpeṇa sphurati svātmanātmani 51

51. ghanībhūtā ghanatvena cidghanā gaganāṅgaṇe
nānāpadārtharūpeṇa sphurati svaātmanā ātmani

51. cidghanā ghanatvena ghanībhūtā gaganāṅgaṇe
ātmani svaātmanā nānāpadārtharūpeṇa sphurati

51. Dense consciousness (cit), having solidified due to its inherent density, manifests as various objects within the vast expanse of space and within its own true self (ātman), through its own inherent nature (ātman).

Words meanings summery:

• घनीभूता (ghanībhūtā) - having become dense, solidified, condensed

• घनत्वेन (ghanatvena) - by density, by solidity

• चिद्घना (cidghanā) - consciousness in its concentrated, substantial form (dense consciousness, solid consciousness)

• गगनाङ्गणे (gaganāṅgaṇe) - in the vast expanse of the subtle or apparent space (in the courtyard of the sky/space)

• नानापदार्थरूपेण (nānāpadārtharūpeṇa) - in the form of various objects

• स्फुरति (sphurati) - shines, throbs, manifests, appears, vibrates

• स्वआत्मना (svaātmanā) - by its own self (ātman)

• आत्मनि (ātmani) - in the self (ātman), within the soul

Words meanings and morphology

घनीभूता (ghanībhūtā) - having become dense, solidified, condensed

(adjective)

Nominative, feminine, singular of ghanībhūta

ghanībhūta - become dense, solidified, condensed

Past Passive Participle

Derived from ghanībhū (to become dense/solid).

Root: bhū (class 1)

घनत्वेन (ghanatvena) - by density, by solidity

(noun)

Instrumental, neuter, singular of ghanatva

ghanatva - density, thickness, solidity

Derived from ghana (dense) + tva (suffix forming abstract neuter noun).

चिद्घना (cidghanā) - consciousness in its concentrated, substantial form (dense consciousness, solid consciousness)

(noun)

Nominative, feminine, singular of cidghana

cidghana - dense consciousness, solid knowledge

Compound: cit (consciousness) + ghana (dense, solid).

Compound type : tatpuruṣa (cit+ghana)

• cit – consciousness, knowledge, intellect
  noun (feminine)
  Root also acts as noun.
  Root: cit (class 1)
• ghana – dense, solid, thick, compact, gross, mass, cloud
  adjective (masculine)
  Root: ghan

गगनाङ्गणे (gaganāṅgaṇe) - in the vast expanse of the subtle or apparent space (in the courtyard of the sky/space)

(noun)

Locative, neuter, singular of gaganāṅgaṇa

gaganāṅgaṇa - courtyard of the sky/space

Compound: gagana (sky/space) + aṅgaṇa (courtyard).

Compound type : tatpuruṣa (gagana+aṅgaṇa)

• gagana – sky, atmosphere, space
  noun (neuter)
  Root: gam (class 1)
• aṅgaṇa – courtyard, open space, area
  noun (neuter)
  Root: aṅg (class 1)

नानापदार्थरूपेण (nānāpadārtharūpeṇa) - in the form of various objects

(noun)

Instrumental, neuter, singular of nānāpadārtharūpa

nānāpadārtharūpa - having the form of various objects

Compound: nānā (various) + padārtha (object/entity) + rūpa (form).

Compound type : bahuvrīhi (nānā+padārtha+rūpa)

• nānā – various, manifold, diverse
  indeclinable
• padārtha – object, entity, meaning of a word, category
  noun (masculine)
  Compound: pada (word) + artha (meaning/purpose/object).
• rūpa – form, shape, appearance, nature, image
  noun (neuter)
  Root: rūp

स्फुरति (sphurati) - shines, throbs, manifests, appears, vibrates

(verb)

3rd person , singular, active, present (laṭ) of sphur

root of class 6 (or 1), Parasmaipada

Root: sphur (class 6)

स्वआत्मना (svaātmanā) - by its own self (ātman)

(noun)

Instrumental, masculine, singular of svaātman

svaātman - one's own self, inner self

Compound: sva (own) + ātman (self).

Compound type : tatpuruṣa (sva+ātman)

• sva – own, self
  pronoun
• ātman – self, soul, spirit, individual soul, supreme soul
  noun (masculine)
  Root: an (class 2)

आत्मनि (ātmani) - in the self (ātman), within the soul

(noun)

Locative, masculine, singular of ātman

ātman - self, soul, spirit, individual soul, supreme soul

Root: an (class 2)