лъчист означава в английски

lambent▼(Glowing or luminous, but lacking heat)
adjective
[UK: ˈlæm.bənt] [US: ˈlæm.bənt]

radiant▼(radiating light and/or heat)
adjective
[UK: ˈreɪ.dɪənt] [US: ˈreɪ.diənt]