A luminous impression produced through excitation of the retina by some cause other than the impingement upon it of rays of light, as by pressure upon the eyeball when the lids are closed. Cf. After-image.
- A sensation of light caused by excitation of the retina by mechanical or electrical means rather than by light, as when the eyeballs are pressed through closed lids.
Malayalam MeaningTransliteration ON/OFF | Not Correct/Proper?
;സ്വനഗ്രാഹി - Svanagraahi | swanagrahi ;