English
subclassify
From sub- + classify.
Proto-Indo-European *upó ‘up; from below’
Proto-Italic *supo ‘under’
Latin sub ‘under, beneath, below’
English sub-
Proto-Indo-European *kelh₁- ‘to call, shout’
…
Proto-Italic *klāssis
Latin classis ‘any one of the five divisions into which…’
French classe ‘class, type, group’
French classifier ‘to classify’
English classify
Today it means
verb To classify into a subclass.
Language periods are conventional ranges, not dates for this word.
Etymograph / subclassify