English
self-adjointself-adjoint
From self- + adjoint.
A compound of self- + adjoint
Proto-Indo-European *selbʰ-
Proto-Germanic *selbaz ‘self’
Proto-Germanic *selba-
English self-
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 Adjoint to itself.
Sources
Sources: Wiktionary, “self-adjoint”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / self-adjoint
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