The term "exototo" is best classified as a noun. This determination is based on its morphological structure, specifically the prefix "exo-," which means "outside" or "external." Prefixes of this nature typically combine with a root to create a term that names a concept, object, or system, which is the grammatical function of a noun.
Analyzing the term's components, "exo-" clearly points to an external quality. While the base "-toto" is not a standard English morpheme, it suggests a connection to "totality" or "the whole" (from the Latin "in toto"). Therefore, "exototo" functions logically as a noun signifying a complete external entity, the entirety of an external system, or a holistic outward-facing concept. While it could be adapted as an adjective (e.g., "the exototo layer"), its primary and most robust grammatical function is to serve as the name for a specific, definable thing.
For the purpose of an article, establishing "exototo" as a noun is the most effective approach. This allows the term to function as the central subject of the discourse. By defining it as a noun, you create a distinct concept that can be analyzed, explained, and referenced with clarity. This provides a solid grammatical foundation for building arguments and theories around the keyword.
