illuminant

As a letter s

is the letter s with a.

As a noun illuminant is

something that illuminates.

As a noun illuminant

is something that illuminates.

As an adjective luminant is

that illuminates; luminous.

As nouns the difference between illuminant and luminescence

is that illuminant is something that illuminates while luminescence is (physics) any emission of light that cannot be attributed merely to the temperature of the emitting body.

As nouns the difference between illuminant and illuminator

is that illuminant is something that illuminates while illuminator is agent noun of illuminate; one who illuminates; an explainer.

As nouns the difference between illuminant and illumination

is that illuminant is something that illuminates while illumination is the act of illuminating, or supplying with light; the state of being illuminated.

As a noun illuminant

is something that illuminates.

As an acronym sou is

statens offentliga utredningar; official reports of the swedish government, identified by year and number, eg sou 2009:16.

As nouns the difference between source and illuminant

is that source is the person, place or thing from which something (information, goods, etc) comes or is acquired while illuminant is something that illuminates.

As a verb source

is (chiefly|us) to obtain or procure:.

Lightsource is likely misspelled.

Lightsource has no English definition.

As a noun illuminant is

something that illuminates.

As nouns the difference between illuminant and spectroradiometer

is that illuminant is something that illuminates while spectroradiometer is a device that measures the spectral power distributions of illuminants, used to evaluate and categorize lighting or to calibrate display technology.