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Glite Dictionary
illumination unit

illumination unit

6.5
A measure of how much light falls on a surface, for example the lux
  • noun
  • /ɪˌluːməˈneɪʃən ˈjuːnɪt/
  • Specialized
translation icon : unidad de iluminación
  • International standards use the lux as the standard illumination unit for lighting design.

Examples

  • The laboratory technician measured the light using an illumination unit called the lux.

  • We need to calculate the illumination units for this room.

  • To ensure proper visibility in the workspace, a minimum illumination unit is required.

  • The illumination unit measures light intensity accurately.

  • International standards use the lux as the standard illumination unit for lighting design.

  • The laboratory technician measured the light using an illumination unit called the lux.

  • To ensure proper visibility in the workspace, a minimum illumination unit is required.

Synonyms

lux
vsillumination unit
  • Specialized
4 8.7

A unit that measures how much light falls on a surface

is the general name for any unit measuring illumination rather than one specific standard
L
vsillumination unit
  • Specialized
9.9

A unit of brightness used to measure light

is the general term for any unit measuring illumination rather than this cgs unit
light unit
vsillumination unit
  • Specialized
4.3

A way to measure how bright something is, like lumens or candelas

focuses broadly on light amount or intensity rather than illumination on a surface

Surface Forms

illumination unit singular
illumination units plural

Morphology

illumination + unit

The compound clearly combines 'illumination' (light falling on surfaces) with 'unit' (a measurement standard), so a learner who knows both words can infer it denotes a measure for illumination. This noun+noun compositional pattern is regular and cross-linguistically common (e.g., 'unit of illumination'/'unidad de iluminación'), making the meaning immediately transparent to a B1 learner.

Etymology

The name illumination unit comes from two simple words: illumination means the light that falls on a surface and unit means a fixed amount used to 'measure' something. So the phrase names a standard amount of light, like the 'lux', used to say how bright a place is.