Able to be combined or mixed together.
From 'combine' plus the suffix '-able' (from Latin 'habilis' meaning 'able'). This word developed in English as -able became the standard way to form possibility adjectives in the 17th-18th centuries.
The suffix '-able' means 'able to be done,' so 'combinable' literally means 'able to be combined' — and any time you see '-able,' you're looking at a word that asks 'what's possible?'
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