Origin: Greek suffix -ography
Chromatography has 2 different meanings across 1 category:
a process used for separating mixtures by virtue of differences in absorbency
"Scientists used chromatography to separate the pigments in ink based on their different rates of absorbency through the paper."
Any of various techniques for the qualitative or quantitative separation of the components of mixtures of compounds; all characterised by the use of a mobile phase (gas or liquid) moving relative to a stationary phase (liquid or solid) - the differences between the rates of migration of the compounds between the two phases effects the separation.
"Scientists used chromatography to separate and identify the individual pigments present in an extract from autumn leaves."
In plain English: Chromatography is a method that separates mixed substances into their individual parts based on how fast they move through a material.
"Scientists used chromatography to separate the different pigments in the flower petals."
Usage: This term refers strictly to scientific laboratory methods and should not be used in casual conversation. Avoid confusing it with "chromatograph," which denotes the instrument itself rather than the process.
The word chromatography comes from German and combines Greek roots meaning "color" and "writing." It was named this way because the technique was originally created to separate plant pigments into distinct colored bands.