महाभारतः mahābhārataḥ - book-2, chapter-7, verse-15

मेधातिथिर्वामदेवः पुलस्त्यः पुलहः क्रतुः ।
मरुत्तश्च मरीचिश्च स्थाणुश्चात्रिर्महातपाः ॥१५॥

15. medhātithirvāmadevaḥ pulastyaḥ pulahaḥ kratuḥ ,
maruttaśca marīciśca sthāṇuścātrirmahātapāḥ.

15. medhātithiḥ vāmadevaḥ pulastyaḥ pulahaḥ kratuḥ
maruttaḥ ca marīciḥ ca sthāṇuḥ ca atriḥ mahātapāḥ

15. Medhātithi, Vāmadeva, Pulastya, Pulaha, Kratu; and Marutta, and Marīci, and Sthāṇu, and Atri, the great ascetic (tapas).

Words meanings summery:

• मेधातिथिः (medhātithiḥ) - Medhātithi

• वामदेवः (vāmadevaḥ) - Vāmadeva

• पुलस्त्यः (pulastyaḥ) - Pulastya

• पुलहः (pulahaḥ) - Pulaha

• क्रतुः (kratuḥ) - Kratu (name of one of the Prajāpatis) (Kratu)

• मरुत्तः (maruttaḥ) - Marutta

• च (ca) - and

• मरीचिः (marīciḥ) - Marīci

• च (ca) - and

• स्थाणुः (sthāṇuḥ) - Sthāṇu (name of a sage, or an epithet of Śiva) (Sthāṇu)

• च (ca) - and

• अत्रिः (atriḥ) - Atri

• महातपाः (mahātapāḥ) - Atri, the great ascetic (tapas) (great ascetic, one with great penance)

Words meanings and morphology

मेधातिथिः (medhātithiḥ) - Medhātithi

(proper noun)

Nominative, masculine, singular of medhātithi

medhātithi - Medhātithi (name of an ancient sage)

वामदेवः (vāmadevaḥ) - Vāmadeva

(proper noun)

Nominative, masculine, singular of vāmadeva

vāmadeva - Vāmadeva (name of a Vedic sage)

पुलस्त्यः (pulastyaḥ) - Pulastya

(proper noun)

Nominative, masculine, singular of pulastya

pulastya - Pulastya (name of one of the Prajāpatis, a mind-born son of Brahmā, and ancestor of Rākṣasas)

पुलहः (pulahaḥ) - Pulaha

(proper noun)

Nominative, masculine, singular of pulaha

pulaha - Pulaha (name of one of the Prajāpatis, a mind-born son of Brahmā)

क्रतुः (kratuḥ) - Kratu (name of one of the Prajāpatis) (Kratu)

(proper noun)

Nominative, masculine, singular of kratu

kratu - Kratu (name of a sage/Prajāpati); will, power, wisdom, sacrifice, ritual

मरुत्तः (maruttaḥ) - Marutta

(proper noun)

Nominative, masculine, singular of marutta

marutta - Marutta (name of an ancient king)

च (ca) - and

(indeclinable)

मरीचिः (marīciḥ) - Marīci

(proper noun)

Nominative, masculine, singular of marīci

marīci - Marīci (name of one of the Prajāpatis, a mind-born son of Brahmā); ray of light

च (ca) - and

(indeclinable)

स्थाणुः (sthāṇuḥ) - Sthāṇu (name of a sage, or an epithet of Śiva) (Sthāṇu)

(proper noun)

Nominative, masculine, singular of sthāṇu

sthāṇu - Sthāṇu (name of a sage; an epithet of Śiva); pillar, trunk of a tree, immoveable, firm

च (ca) - and

(indeclinable)

अत्रिः (atriḥ) - Atri

(proper noun)

Nominative, masculine, singular of atri

atri - Atri (name of one of the Saptarishis, a mind-born son of Brahmā)

महातपाः (mahātapāḥ) - Atri, the great ascetic (tapas) (great ascetic, one with great penance)

(adjective)

Nominative, masculine, singular of mahātapas

mahātapas - one with great asceticism or penance, great ascetic (tapas)

Compound of mahā (great) and tapas (asceticism).

Compound type : bahuvrīhi (mahā+tapas)

• mahā – great, large, mighty, extensive
  adjective
• tapas – asceticism, penance, heat, religious austerity (tapas)
  noun (neuter)
  Root: tap (class 1)

Note: Nominative singular masculine form of mahātapas.