योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-126, verse-22

ततोऽशीतिसहस्राणि योजनानां घनावनिम् ।
हिमकल्पजलाम्भोधेरुल्लङ्घ्य सुघनोदरीम् ॥ २२ ॥

tato'śītisahasrāṇi yojanānāṃ ghanāvanim ,
himakalpajalāmbhodherullaṅghya sughanodarīm 22

22. tataḥ aśītisahasrāṇi yojanānām ghanāvanim
himakalpajalāmbhodheḥ ullaṅghya sughanodarīm

22. tataḥ himakalpajalāmbhodheḥ aśītisahasrāṇi
yojanānām sughanodarīm ghanāvanim ullaṅghya

22. Then, having traversed eighty thousand yojanas of dense land, which was intensely layered, beyond the ocean whose waters resembled ice.

Words meanings summery:

• ततः (tataḥ) - then, thereupon (then, thereupon, from that)

• अशीतिसहस्राणि (aśītisahasrāṇi) - eighty thousands

• योजनानाम् (yojanānām) - of yojanas (a measure of distance)

• घनावनिम् (ghanāvanim) - dense earth, thick land

• हिमकल्पजलाम्भोधेः (himakalpajalāmbhodheḥ) - from the ocean whose waters are like ice

• उल्लङ्घ्य (ullaṅghya) - having traversed (having crossed, having leaped over)

• सुघनोदरीम् (sughanodarīm) - intensely layered (referring to the land) (very dense-bellied, very deep-layered, very stout-bodied)

Words meanings and morphology

ततः (tataḥ) - then, thereupon (then, thereupon, from that)

(indeclinable)

अशीतिसहस्राणि (aśītisahasrāṇi) - eighty thousands

(noun)

Accusative, neuter, plural of aśītisahasra

aśītisahasra - eighty thousand

Compound type : dvandva / karmadhāraya (aśīti+sahasra)

• aśīti – eighty
  noun (feminine)
• sahasra – thousand
  noun (neuter)

Note: Can also be nominative plural, but here it's the object of 'ullaṅghya'.

योजनानाम् (yojanānām) - of yojanas (a measure of distance)

(noun)

Genitive, neuter, plural of yojana

yojana - a measure of distance (usually 4 to 9 miles), a stage of a journey, yoking, union

Root: yuj (class 7)

Note: Indicates extent or measure.

घनावनिम् (ghanāvanim) - dense earth, thick land

(noun)

Accusative, feminine, singular of ghanāvanī

ghanāvanī - dense land, thick earth

Compound type : karmadhāraya (ghana+avanī)

• ghana – dense, thick, solid, compact
  adjective (masculine)
• avanī – earth, ground, land
  noun (feminine)

Note: Object of the absolutive 'ullaṅghya'.

हिमकल्पजलाम्भोधेः (himakalpajalāmbhodheḥ) - from the ocean whose waters are like ice

(noun)

Ablative, masculine, singular of himakalpajalāmbhodhi

himakalpajalāmbhodhi - ocean with waters like ice

Compound type : bahuvrīhi / tatpuruṣa (hima+kalpa+jala+ambhodhi)

• hima – ice, frost, snow
  noun (neuter)
• kalpa – like, resembling, similar to (at the end of a compound); a cosmic age
  adjective / noun (masculine)
• jala – water
  noun (neuter)
• ambhodhi – ocean, sea (bearer of water)
  noun (masculine)
  Prefix: ambhas
  Root: dhā (class 3)

Note: Indicates the point of origin or 'beyond which' the crossing occurred.

उल्लङ्घ्य (ullaṅghya) - having traversed (having crossed, having leaped over)

(indeclinable)

absolutive

Derived from root 'laṅgh' with upasarga 'ud'.

Prefix: ud

Root: laṅgh (class 1)

Note: An absolutive indicating prior action.

सुघनोदरीम् (sughanodarīm) - intensely layered (referring to the land) (very dense-bellied, very deep-layered, very stout-bodied)

(adjective)

Accusative, feminine, singular of sughanodarī

sughanodarī - very dense-bellied, having a very thick interior, intensely layered

Compound type : bahuvrīhi (su+ghana+udara)

• su – good, well, very, excellent
  indeclinable
• ghana – dense, thick, solid, compact
  adjective (masculine)
• udara – belly, interior, womb, cavity
  noun (neuter)

Note: Modifies 'ghanāvanim'.