Where does “nonalphanumerical” come from?

nonalphanumerical (English) comes from English alphanumerical, from English numerical, from English -ál, from English aldehyde, from German Aldehyd, from Latin alcohol, from Andalusian Arabic كُحُول, from Arabic كحل — kohl, antimony paste.

Ancestry of “nonalphanumerical”, step by step

nonalphanumerical traces back through two separate lines of ancestry.

via English alphanumerical

StepLanguageWordMeaning
1EnglishalphanumericalConsisting of only letters and numbers;...
2Englishnumericalof or pertaining to numbers; The same in number;...
3English-álOf or pertaining to. Adjectival suffix appended to various words, often nouns, to produce an adjective form. Often added to words of Latin origin, but used with other words also
4EnglishaldehydeAny of a large class of reactive organic...
5GermanAldehydaldehyde
6Latinalcoholkohl, collyrium, stibium; any other powder...
7Andalusian Arabicكُحُول
8Arabicكحلantimony; kohl, stibnite; black coloring of the...
9Arabicكُحْلantimony; kohl, stibnite
10Akkadianguḫlumkohl, antimony paste

via English non

StepLanguageWordMeaning
1EnglishnonObsolete form of none
2Frenchnonno; not; a no, a negative response
3Old Frenchnonno; not; Alternative form of nom
4Latinnōnnot
5Old Latinnoenum
6Proto-Indo-Europeanóynosone; single
Every word from Akkadian guḫlum