Providing illumination or light. / (figuratively) Providing clarification or explanation; educational, revealing.

present participle of illuminate.

plural of illuminance

(physics) The luminous flux incident on unit area of a surface; measured in lux or lumens.

plural of illuminant

plural of illuminator

One who illuminates; an explainer. / An artist who adds illustrations and decorations to illuminated manuscriptsᵂ.

(obsolete) bright; clear

In an illuminative manner.

The principles of the Illuminati.