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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Back-formation from chromatographic, borrowed from German chromatographisch (see there for more); by surface analysis, chromato- + -graphy. The technique is so named because it was developed primarily for the separation of the plant pigments, which would separate in bands of different "colors" (chromato-) .
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Classic usage
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