obhāsetvā

absolutive (ind.) of obhāseti, causal of obhāsati

having lit up; having illuminated; lit. having caused to shine down

Built from

o — prefix · down, downward
Variant of ava-; conveys the imagery of light or radiance descending from above onto an object below.
bhās — root · shine, gleam
Cognate with Sanskrit bhās-, Greek phāos 'light', and the Indo-European root *bʰeh₂- 'to shine'; found in English 'base' (shining metal) and many light-related words.
e — stem · present stem
Forms the present indicative and causative base.
tvā — ending · absolutive
Converts the verb to an indeclinable participle expressing completed action prior to the main verb; -tvā marks the action as finished.

Analysis. o (< ava downward) + bhāseti (causative stem of bhās- 'shine, gleam'), expressing the sense 'causing to shine down upon' — the downward prefix ava- (also o-) shifts from physical descent to the metaphorical descent of light

Etymology. bhās- 'to shine, gleam, illuminate' is cognate with Sanskrit bhās- (id.), Greek phāos 'light' (phaenomenal, phenomenon), and English

Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.

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