mehaanilisele
Mehaanilisele is the allative singular form of the Estonian adjective mehaaniline, meaning “mechanical.” In Estonian, adjectives agree with the nouns they modify in number and case, and when the noun is in the allative case (marked with the suffix -le), the adjective takes the corresponding allative form, typically ending in -lisele.
Mehaanilisele seadmele means “to the mechanical device.”
Mehaanilisele tööriistale means “to the mechanical tool.”
These forms appear in technical and descriptive writing when indicating movement toward or relation to a mechanical
In the nominative case, the base form is mehaaniline (for example, mehaaniline seade = a mechanical device).
Mehaanilisele is not a separate term with a specialized meaning beyond being an inflected form of mehaaniline.