भास्वान
Bhaasvaan
Bhāsvān · IAST
Shining and bright, like the sun.
Etymology · व्युत्पत्ति
भास्वान् = हलन्त-लोप → भास्वान
The form भास्वान् is written with a final halant (the grammatical/citation spelling); as a borne name the final halant is dropped (भास्वान), and the English form takes no trailing schwa.
Scripture references
Bhagavad Gītā · 11.17
किरीटिनं गदिनं चक्रिणं च तेजोराशिं सर्वतो दीप्तिमन्तम् । पश्यामि त्वां दुर्निरीक्ष्यं समन्ताद्दीप्तानलार्कद्युतिमप्रमेयम् ॥
kirīṭinaṃ gadinaṃ cakriṇaṃ ca tejo-rāśiṃ sarvato dīptimantam . paśyāmi tvāṃ durnirīkṣyaṃ samantād dīptānalārka-dyutim aprameyam ..
I see You crowned, holding mace and discus, a mass of light blazing on every side, hard to look upon, glowing all around like a flaming fire and the sun, beyond all measure. [Arjuna describing the cosmic form]
Source: akshara-pravaaha.com/naamaavali/bhasvan · CC BY-SA 4.0 · Citations from Bhagavad Gītā