Nonbinary Definition

nŏn-ā ′ nŏn-bē ′
adjective
Not binary; not consisting of or relating to two parts or components.
American Heritage Medicine
Of or relating to a system of numeration that does not have 2 as its base.
Octal and hexidecimal number systems are nonbinary.
American Heritage Medicine
Relating to a person whose gender identity is other than conventionally male or female.
American Heritage Medicine

Alternative spelling of non-binary.

Wiktionary