illuminant
Thing that shines
An illuminant is a source of light—anything that illuminates.
The term appears most often in technical contexts: colorimetry uses standard illuminants (like D65, simulating daylight) as reference light sources for measuring how colors appear.
The lab calibrated its equipment using a daylight illuminant.
As an adjective, illuminant means giving off light.
Rounded storage organ
- candleWax stick with wick
- lampElectric light fixture
- lanternEnclosed portable light
- torchHandheld burning light source
flashlight · chandelier · sconce · spotlight · floodlight · headlight · streetlight · beacon
Glowing luminous quality
- luminosityIntrinsic brightness of source
- brillianceExceptional intelligence or luster
- glowSteady, soft light
- shineEmit or reflect light
gleam · shimmer · sparkle · twinkle · luster · sheen · gloss · dazzle
Semiconductor that glows
- incandescentGlowing from heat
- halogenSalt-producing element group
- fluorescentEmitting light when energized
- neonInert illuminating element
tungsten · xenon · argon · phosphor · cathode · electrode · ballast · starter
Flammable petroleum distillate
- oilSlippery viscous fluid
- gasFormless, expanding substance
- waxPliable waterproof substance
- tallowRendered animal fat
paraffin · propane · butane · ethanol · acetylene · naphtha · spermaceti
Heatless delayed light emission
- bioluminescenceOrganism-generated light emission
- foxfireGlowing fungi on rot
- fireflyBioluminescent nocturnal beetle
- glowwormBioluminescent beetle larva
dinoflagellate · anglerfish · jellyfish · plankton · chemiluminescence
Jewish ceremonial lampstand
- kinaraSeven-branched Kwanzaa candleholder
- votiveOffered in devotion
- candelabraMulti-branched candle stand
- sconceMounted light fixture
torchlight · lamplight · candlelight · Diwali · Hanukkah
bulb
Rounded storage organ
torch · flashlight · chandelier · sconce · spotlight · floodlight · headlight · streetlight · beacon · lighthouse
radiance
Glowing luminous quality
- luminosityIntrinsic brightness of source
- brillianceExceptional intelligence or luster
- glowSteady, soft light
shine · gleam · shimmer · sparkle · twinkle · luster · sheen · gloss · dazzle · effulgence
LED
Semiconductor that glows
- incandescentGlowing from heat
- halogenSalt-producing element group
- fluorescentEmitting light when energized
neon · tungsten · xenon · argon · phosphor · cathode · electrode · ballast · starter · dimmer
kerosene
Flammable petroleum distillate
tallow · paraffin · propane · butane · ethanol · acetylene · naphtha · spermaceti
phosphorescence
Heatless delayed light emission
- bioluminescenceOrganism-generated light emission
- foxfireGlowing fungi on rot
- fireflyBioluminescent nocturnal beetle
glowworm · dinoflagellate · anglerfish · jellyfish · plankton · chemiluminescence
menorah
Jewish ceremonial lampstand
- kinaraSeven-branched Kwanzaa candleholder
- votiveOffered in devotion
- candelabraMulti-branched candle stand
sconce · torchlight · lamplight · candlelight · Diwali · Hanukkah
- illuminated manuscriptsHand-adorned medieval book pages
- illuminated lettersOrnamented characters in manuscripts
- illuminated signsBacklit or glowing markers
- illuminated textAdorned handwritten document
- illuminated streetsRoads with artificial lighting
- illuminated pagesAdorned manuscript sheets
illuminate, illumination, illuminated, illuminating, illuminates, illuminations, illuminative, illuminator, illuminators