Kartoissa

Kartoissa is a Finnish term that functions as the inessive plural form of the noun kartta, meaning maps. In English, it can be understood as “in the maps.” It is used when referring to information, features, or content that exist within or across multiple maps.

In Finnish grammar, the inessive case expresses location inside or within something, and the plural form is used when the reference concerns more than one map. Therefore, kartoissa is typically employed in sentences about what is depicted, recorded, or stored across several maps, atlases, or map layers. For example, one might say, “Kartoissa näkyvät kaupungin rajat,” meaning that the city’s borders are visible in the maps.

Kartoissa is commonly encountered in fields related to geography, cartography, education, and geographic information systems (GIS). It appears when comparing map layers, discussing geographic data across multiple sources, or describing content that is present within a set of maps rather than a single one. The term is closely connected to related forms of kartta, such as kartta (singular), kartat (nominative plural), and karttojen (genitive plural), which are used in different grammatical contexts.

See also: kartta, kartat, karttojen, as well as general Finnish case morphology such as the inessive -issa/-issä and the broader topic of locative cases in Finnish.