- serving to instruct or enlighten or inform
- (instructively) informatively: in an informative manner
- In the Finnish language and Estonian language, the instructive case has the basic meaning of "by means of". It is a comparatively rarely used case, though it is found in some commonly used expressions, such as omin silmin -> "with one's own eyes".
- A case in the Finnish language. It expresses the means or the instrument used to perform an action; conveying knowledge, information or instruction
- A developmental influence that dictates the fate of a cell rather than simply permitting differentiation to occur.
- Characteristic ending -n added usually (but not always) to plural stem