eksperimentaalsete
Eksperimentaalsete is Estonian and functions as an inflected form of the adjective eksperimentaalne, meaning experimental. It is the genitive plural form used to modify a noun in the genitive case, typically in formal or academic writing.
In Estonian adjectives decline to agree with the noun in number, case and, to some extent, definiteness.
Usage of eksperimentaalsete is common in scientific, technical, and scholarly texts where the writer discusses methods,
See also: Estonian grammar and adjective declension, examples of genitive plural adjective forms, and common academic
In summary, eksperimentaalsete is a grammatically specialized form used to describe plural nouns in the genitive