योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-38, verse-18

सहस्रशिरसं शान्तं सहस्रभुजभूषणम् ।
सर्वत्रेक्षणशक्त्याढ्यं सर्वतो घ्राणशक्तिकम् ॥ १८ ॥

sahasraśirasaṃ śāntaṃ sahasrabhujabhūṣaṇam ,
sarvatrekṣaṇaśaktyāḍhyaṃ sarvato ghrāṇaśaktikam 18

18. sahasraśirasam śāntam sahasrabhuja bhūṣaṇam |
sarvatrekṣaṇaśaktyāḍhyam sarvataḥ ghrāṇaśaktikam ||

18. (mahādevam) sahasraśirasam śāntam sahasrabhuja bhūṣaṇam
sarvatrekṣaṇaśaktyāḍhyam sarvataḥ ghrāṇaśaktikam

18. One should meditate on Mahadeva who is having thousands of heads, peaceful, adorned with thousands of arms, endowed with the power (śakti) of sight everywhere, and possessing the power of smell in all directions.

Words meanings summery:

• सहस्रशिरसम् (sahasraśirasam) - describing Mahadeva (having thousands of heads)

• शान्तम् (śāntam) - describing Mahadeva's nature (peaceful, tranquil, calm)

• सहस्रभुज भूषणम् (sahasrabhuja bhūṣaṇam) - describing Mahadeva's form (adorned with thousands of arms)

• सर्वत्रेक्षणशक्त्याढ्यम् (sarvatrekṣaṇaśaktyāḍhyam) - describing Mahadeva's omnipresent vision (endowed with the power of sight everywhere)

• सर्वतः (sarvataḥ) - everywhere, from all sides, in all directions

• घ्राणशक्तिकम् (ghrāṇaśaktikam) - describing Mahadeva's omnipresent sense of smell (having the power of smell)

Words meanings and morphology

सहस्रशिरसम् (sahasraśirasam) - describing Mahadeva (having thousands of heads)

(adjective)

Accusative, masculine, singular of sahasraśiras

sahasraśiras - having a thousand heads

Compound type : bahuvrihi (sahasra+śiras)

• sahasra – thousand
  numeral (neuter)
• śiras – head
  noun (neuter)

शान्तम् (śāntam) - describing Mahadeva's nature (peaceful, tranquil, calm)

(adjective)

Accusative, masculine, singular of śānta

śānta - peaceful, calm, tranquil, quiet

Past Passive Participle

Derived from root śam (4P, 1A) 'to be calm', suffix -ta.

Root: śam (class 4)

सहस्रभुज भूषणम् (sahasrabhuja bhūṣaṇam) - describing Mahadeva's form (adorned with thousands of arms)

(adjective)

Accusative, masculine, singular of sahasrabhuja bhūṣaṇa

sahasrabhuja bhūṣaṇa - adorned with a thousand arms; whose adornments are a thousand arms

Compound type : bahuvrihi (sahasra+bhuja+bhūṣaṇa)

• sahasra – thousand
  numeral (neuter)
• bhuja – arm
  noun (masculine)
• bhūṣaṇa – ornament, adornment
  noun (neuter)

सर्वत्रेक्षणशक्त्याढ्यम् (sarvatrekṣaṇaśaktyāḍhyam) - describing Mahadeva's omnipresent vision (endowed with the power of sight everywhere)

(adjective)

Accusative, masculine, singular of sarvatrekṣaṇaśaktyāḍhya

sarvatrekṣaṇaśaktyāḍhya - endowed with the power of sight everywhere

Compound type : bahuvrihi (sarvatra+īkṣaṇa+śakti+āḍhya)

• sarvatra – everywhere
  indeclinable
• īkṣaṇa – seeing, eye, sight
  noun (neuter)
• śakti – power, energy, capability
  noun (feminine)
• āḍhya – rich in, endowed with, prosperous
  adjective

सर्वतः (sarvataḥ) - everywhere, from all sides, in all directions

(indeclinable)

Derived from sarva (all) with suffix -tas.

घ्राणशक्तिकम् (ghrāṇaśaktikam) - describing Mahadeva's omnipresent sense of smell (having the power of smell)

(adjective)

Accusative, masculine, singular of ghrāṇaśaktika

ghrāṇaśaktika - having the power of smell, possessing olfactory power

Compound type : bahuvrihi (ghrāṇa+śaktika)

• ghrāṇa – smell, nose, sense of smell
  noun (neuter)
• śaktika – possessed of power, potent
  adjective
  Derived from śakti with suffix -ka.