योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-7, verse-15

सप्ताब्धयोऽग्रसुतयः पातालं मूलकोटरम् ।
युगानि घुणवृन्दानि पर्वाणि गुणपङ्क्तयः ॥ १५ ॥

saptābdhayo'grasutayaḥ pātālaṃ mūlakoṭaram ,
yugāni ghuṇavṛndāni parvāṇi guṇapaṅktayaḥ 15

15. saptābdhayaḥ agrasutayaḥ pātālam mūlakoṭaram
yugāni ghuṇavṛndāni parvāṇi guṇapaṅktayaḥ

15. saptābdhayaḥ agrasutayaḥ pātālam mūlakoṭaram
yugāni ghuṇavṛndāni parvāṇi guṇapaṅktayaḥ

15. The seven oceans are its topmost shoots; the netherworld (pātāla) is the hollow of its root. The epochs are multitudes of worms, and the joints are rows of qualities.

Words meanings summery:

• सप्ताब्धयः (saptābdhayaḥ) - seven oceans

• अग्रसुतयः (agrasutayaḥ) - topmost shoots, shoots at the tip

• पातालम् (pātālam) - the netherworld (pātāla) (the netherworld, subterranean region)

• मूलकोटरम् (mūlakoṭaram) - root-hollow, cavity of the root

• युगानि (yugāni) - epochs, ages, eras

• घुणवृन्दानि (ghuṇavṛndāni) - multitudes of worms, swarms of insects

• पर्वाणि (parvāṇi) - joints, knots (of a tree), sections

• गुणपङ्क्तयः (guṇapaṅktayaḥ) - rows of qualities, lines of attributes

Words meanings and morphology

सप्ताब्धयः (saptābdhayaḥ) - seven oceans

(noun)

Nominative, masculine, plural of saptābdhi

saptābdhi - the seven oceans (of Hindu cosmology)

Compound type : karmadharaya (saptan+abdhi)

• saptan – seven
  numeral
• abdhi – ocean, sea
  noun (masculine)

अग्रसुतयः (agrasutayaḥ) - topmost shoots, shoots at the tip

(noun)

Nominative, feminine, plural of agrasuti

agrasuti - shoots or sprouts at the top or tip

Compound type : tatpurusha (agra+suti)

• agra – tip, top, front, summit
  noun (neuter)
• suti – shoot, sprout, birth
  noun (feminine)

पातालम् (pātālam) - the netherworld (pātāla) (the netherworld, subterranean region)

(noun)

Nominative, neuter, singular of pātāla

pātāla - the netherworld, a subterranean region (often described as seven regions below the earth)

मूलकोटरम् (mūlakoṭaram) - root-hollow, cavity of the root

(noun)

Nominative, neuter, singular of mūlakoṭara

mūlakoṭara - a hollow or cavity at the root (of a tree)

Compound type : tatpurusha (mūla+koṭara)

• mūla – root, base, origin
  noun (neuter)
• koṭara – hollow, cavity (of a tree)
  noun (neuter)

युगानि (yugāni) - epochs, ages, eras

(noun)

Nominative, neuter, plural of yuga

yuga - epoch, age, a period of time (e.g., Kṛta, Tretā, Dvāpara, Kali)

घुणवृन्दानि (ghuṇavṛndāni) - multitudes of worms, swarms of insects

(noun)

Nominative, neuter, plural of ghuṇavṛnda

ghuṇavṛnda - a multitude or swarm of worms/insects

Compound type : tatpurusha (ghuṇa+vṛnda)

• ghuṇa – woodworm, insect
  noun (masculine)
• vṛnda – multitude, group, mass
  noun (neuter)

पर्वाणि (parvāṇi) - joints, knots (of a tree), sections

(noun)

Nominative, neuter, plural of parvan

parvan - knot, joint (of a reed or tree); division, section; festival day

गुणपङ्क्तयः (guṇapaṅktayaḥ) - rows of qualities, lines of attributes

(noun)

Nominative, feminine, plural of guṇapaṅkti

guṇapaṅkti - rows or lines of qualities or attributes

Compound type : tatpurusha (guṇa+paṅkti)

• guṇa – quality, attribute, constituent (of prakṛti)
  noun (masculine)
• paṅkti – row, line, series, range
  noun (feminine)