Langimage
English

chromophore

|chro-mo-phore|

C2

🇺🇸

/ˈkroʊməfɔːr/

🇬🇧

/ˈkrəʊməfɔː/

color-bearing, light-absorbing group in a molecule

Etymology
Etymology Information

'chromophore' originates from International Scientific Vocabulary, ultimately from Greek, specifically the elements 'chroma' meaning 'color' and '-phoros' (from 'pherein') meaning 'bearing' or 'carrying.'

Historical Evolution

'Chromophor' in German dye chemistry influenced the English formation, and the term became the modern English word 'chromophore' in the late 19th century through scientific usage combining 'chromo-' + '-phore.'

Meaning Changes

Initially, it meant a color-bearing group in dye molecules; over time, its use broadened to include light-absorbing groups in biological macromolecules and photophysical contexts while retaining the core sense of ‘color/light-bearing unit.’

Meanings by Part of Speech

Noun 1

in chemistry, the part of a molecule that absorbs visible light and is responsible for its color.

The chromophore in the dye absorbs blue light, making the solution appear red.

Synonyms

Noun 2

in biochemistry, a light-absorbing moiety within a biomolecule (such as a protein) that can initiate photochemical or photophysical processes, sometimes producing fluorescence.

In GFP, the chromophore forms spontaneously within the protein's core.

Synonyms

Last updated: 2025/08/11 16:15