English
equatable
From equate + -able.
A compound of equate + -able
Old Latin aiquos
Latin aequus ‘level, equal’
Latin aequō ‘make equal or level’
Latin aequātus ‘equalized, having been made equal’
Middle English equaten
English equate
Today it means
adj Capable of being equated; comparable
Language periods are conventional ranges, not dates for this word.
Etymograph / equatable