Late 17th century; earliest use found in John Locke (1632–1704), philosopher. From add + -ible, perhaps after post-classical Latin addibilis. Compare addibility.
Definition of addible in US English:
addible
adjectiveˈadɪbl
Capable of being added.
Origin
Late 17th century; earliest use found in John Locke (1632–1704), philosopher. From add + -ible, perhaps after post-classical Latin addibilis. Compare addibility.