es·sive (ěs'ĭv) adj. Of, relating to, or being the grammatical case indicating a state of being or an existence in a particular capacity or state in some languages, as in Finnish professorina, "as a professor." n.
The essive case.
A word or form in the essive case.
[Finnish essiivi, from New Latin essīvus : Latin esse, to be; see es- in Indo-European roots + Latin -īvus, -ive.]