Avabhāsa [later form of obhāsa] Only in cpd. gambhīrā- vabhāso D ii.55, looking deep. Same cpd. at A ii.105 = Pug 46 has obhāsa.

Pali-English Dictionary, TW Rhys Davids, William Stede,

avabhāsa[obhāsa] effulgence of light, aura. Avabhāsa refers to the rays of light emitted from the body during deep insight (vipaśyanā).

Buddhānusmṛti - A Glossary of Buddhist Terms

Aṅguttara Nikaya. Obhāsa. Khuddaka Nikāya. Mahākassapatherapadānam. Milindapañhapāḷi. II. 37; IV. 25; V. 307.

ava-bhāsa m. splendour, lustre, light
• appearance (especially ifc. with words expressing a colour) Jain. Suśr
• (in Vedānta phil.) manifestation
• reach, compass, see, śravaṇâvabh○

Sanskrit-English Dictionary, by M. Monier William