What is the meaning of Affix?

That which is affixed; an appendage.

A bound morpheme added to the word’s stem's end.

A bound morpheme added to a word’s stem; a prefix, suffix, etc.

The complex number associated with the point in the Gauss plane with coordinates .

Any small feature, as a figure, a flower, or the like, added for ornament to a vessel or other utensil, to an architectural feature.

To attach.

To subjoin, annex, or add at the close or end; to append to.

To fix or fasten figuratively; with on or upon.

Affix (linguistics and mathematics)

an affix

Source: wiktionary.org