mexikanischer
Mexikanischer is the attributive masculine singular form of the German adjective mexikanisch, meaning “Mexican” in relation to Mexico. It is not a standalone noun; the corresponding noun for a person from Mexico is Mexikaner (plural Mexikaner, feminine Mexikanerin).
The form mexikanischer appears when a masculine singular noun is modified without a definite article, as in
Usage and scope: mexikanischer describes things related to Mexico, including nationality, culture, cuisine, geography, and institutions.
Etymology: the adjective derives from Mexico (in German, Mexiko), filtered through the German adjective formation mexikanisch.