colourimetric

Etymology tree
English colour
Proto-Indo-European *meh₁-
Proto-Indo-European *-tḗr
Proto-Indo-European *-trom
Proto-Hellenic *-tron
Ancient Greek -τρον (-tron)
Ancient Greek μέτρον (métron)
Proto-Indo-European *-kos
Ancient Greek -κός (-kós)
Ancient Greek -ικός (-ikós)
Ancient Greek μετρῐκός (metrĭkós)bor.
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Ancient Greek μέτρον (métron)der.
Latin metrum
Proto-Indo-European *-ikos
Proto-Italic *-ikos
Latin -icus
Latin metricusder.
French -métriquebor.
English -metric
English colourimetric
From colour + -metric.