Etymograph

English

adjointable

From adjoint + -able.

Formed from adjoint + -able

Proto-Indo-European *yewg- ‘to join, to yoke, to tie together’

…

Latin adiungō ‘to add, join, attach, append, annex or bind…’

Old French ajoindre

Middle French adjoindre

French adjoindre ‘to join’

English adjoint

Today it means

adj That may be made adjoint

Language periods are conventional ranges, not dates for this word.

Etymograph / adjointable