backlight
UK[ˈbæklaɪt]US[ˈbækˌlaɪt]
n
A light placed or shining behind something, especially a liquid crystal display (LCD) screen, to illuminate it.
v
To illuminate something from behind.
Morpheme Breakdown
back
light
back
position
light
illumination
Etymology
The word 'backlight' is a transparent compound formed from two native English elements, 'back' and 'light'. Its formation follows the common Germanic pattern of combining two existing nouns to create a new, specific concept. The term is a modern technical coinage, logically describing a light source positioned at the rear of an object to illuminate it from behind. This literal sense is directly applied in contexts like photography and display technology, where a backlight is essential for making an LCD screen visible. The verb form, meaning to provide such illumination, is a straightforward conversion (zero derivation) from the noun, a productive process in English.
Analysis
Structure: back (position) + light (illumination)
- back: From Old English 'bæc', meaning the rear part of the body or the opposite of front. In this compound, it functions as a noun/adjective denoting position or location.
- light: From Old English 'lēoht', meaning brightness or illumination. In this compound, it functions as a noun denoting the source of that brightness.
Examples
The smartphone's display became dim because the backlight failed.
Photographers often backlight their subjects to create a dramatic silhouette effect.
Adjust the backlight setting on your monitor to reduce eye strain.