योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-76, verse-27

स्थिरकल्पानलज्वालातुल्यविद्युन्मयाचलः ।
एककोणकविश्रान्तसप्तार्णवपयोभरः ॥ २७ ॥

sthirakalpānalajvālātulyavidyunmayācalaḥ ,
ekakoṇakaviśrāntasaptārṇavapayobharaḥ 27

27. sthirakalpānalajvālātulyavidyunmayācalaḥ
ekakoṇakaviśrāntasaptārṇavapayobharaḥ

27. sthirakalpānalajvālātulyavidyunmayācalaḥ
ekakoṇakaviśrāntasaptārṇavapayobharaḥ

27. This host of cosmic clouds (kalpa-ambuda) was like a mountain of lightning (vidyut), resembling the steady flames of the cosmic dissolution (kalpa) fire (anala). It contained the accumulated waters of the seven oceans (sapta-arṇava), all condensed and resting within a single corner.

Words meanings summery:

• स्थिरकल्पानलज्वालातुल्यविद्युन्मयाचलः (sthirakalpānalajvālātulyavidyunmayācalaḥ) - like a mountain of lightning resembling the steady flames of the cosmic dissolution fire

• एककोणकविश्रान्तसप्तार्णवपयोभरः (ekakoṇakaviśrāntasaptārṇavapayobharaḥ) - containing the mass of water from the seven oceans, resting in one corner

Words meanings and morphology

स्थिरकल्पानलज्वालातुल्यविद्युन्मयाचलः (sthirakalpānalajvālātulyavidyunmayācalaḥ) - like a mountain of lightning resembling the steady flames of the cosmic dissolution fire

(adjective)

Nominative, masculine, singular of sthirakalpānalajvālātulyavidyunmayācala

sthirakalpānalajvālātulyavidyunmayācala - a mountain made of lightning, resembling the steady flames of the cosmic dissolution fire

Compound type : Tatpurusha (sthira+kalpa+anala+jvālā+tulya+vidyut+maya+acala)

• sthira – steady, stable, fixed
  adjective (masculine)
• kalpa – aeon, cosmic cycle, dissolution
  noun (masculine)
• anala – fire
  noun (masculine)
• jvālā – flame, blaze
  noun (feminine)
• tulya – similar, equal to, resembling
  adjective (masculine)
• vidyut – lightning, electricity
  noun (feminine)
• maya – made of, consisting of, full of
  adjective (masculine)
  Suffix indicating 'made of'.
• acala – mountain (lit. immovable); firm, steady
  noun (masculine)

एककोणकविश्रान्तसप्तार्णवपयोभरः (ekakoṇakaviśrāntasaptārṇavapayobharaḥ) - containing the mass of water from the seven oceans, resting in one corner

(adjective)

Nominative, masculine, singular of ekakoṇakaviśrāntasaptārṇavapayobhara

ekakoṇakaviśrāntasaptārṇavapayobhara - one in whose corner the accumulated waters of the seven oceans are resting

Compound type : Bahuvrihi (eka+koṇaka+viśrānta+sapta+arṇava+payas+bhara)

• eka – one, single
  numeral/adjective (masculine)
• koṇaka – corner, angle
  noun (masculine)
• viśrānta – rested, reposed, contained, ceased
  adjective (masculine)
  Past Passive Participle
  From root śram (to be weary, to rest) with prefix vi.
  Prefix: vi
  Root: śram (class 4)
• sapta – seven
  numeral/adjective
• arṇava – ocean, sea
  noun (masculine)
• payas – water, milk
  noun (neuter)
• bhara – burden, mass, quantity, accumulation
  noun (masculine)