gusni -gus-gu'i- gismu

x1 [energy] is light/illumination illuminating x2 from light source x3.

[x3 illuminates/lights x2 with light/illumination x1; x2 is lit/illuminated by illumination x1 from source x3 (= selgu'i for reordered places); light/lamp (= tergu'i)](cf. dirce, manku, solri, carmi, ctino, kantu)


In notes:

carmi
x1 is intense/bright/saturated/brilliant in property (ka) x2 as received/measured by observer x3.
ctino
x1 is a shadow/the shade of object x2, made by light/energy source x3.
dirce
x1 radiates/emits x2 under conditions x3.
kantu
x1 is a quantum/ray/elementary particle/smallest measurable increment of property/activity x2.
manku
x1 is dark/lacking in illumination.
solri
x1 is the sun of home planet x2 (default Earth) of race x3; (adjective:) x1 is solar.
ctilytergu'i
x1 is an oil lamp using petroleum-based products, illuminating x2 with light x1.
dictergu'i
g3=d2 is an electric lamp illuminating g2 with light g1.
guska'u
x1 is a photon.
gusminli
x1 is x2 (default 1) light year(s).
gusnunsla
n1 is Diwali (Deepavali) celebrated by s1 with activities s3
gusybatke
b1 is a light switch which is on b2 and made from material b4 and controlling the light source g3.
gusycai
x1 gleams/shines on to x2, the light source being x3.
gusydicra
d1 extinguishes light g1 illuminating g2, the light source being g3.
malmliselgu'i
ma1=mi1=g2 is ill-lit with light g1 from light source g3.
rastergu'i
x1 is an oil lamp using animal or vegetable products, illuminating x2 with light x1.
aksarni
x1 is aurora borealis
ro'engu'i
x1 (energy) is X-ray radiation, radiating at x2, from source x3
vanlamigu
x1 is sunlight reflected by a pool of water in the evening
xy zei dirce
d1 radiates X-rays d2 under conditions d3.
xy zei gusni
x1 (energy) is X-ray radiation, radiating at x2, from source x3
xipfne
x1 emits light characteristic of/is of the color that is described by/(as) arising from/associated with the approximately twenty-one centimeter wavelength, hydrogen hyperfine proton/electron spin-flip transition (from parallel to antiparallel configuration, id est: from the higher energy state to the lower energy state), electromagnetic radiation