Definition of superessive in US English:

superessive

adjective

Grammar
  • Of, relating to, or designating a case or grammatical relation used in some languages to express position above or on top of.

noun

Grammar
  • The superessive case; a word, form, etc., in this case.

Origin

Late 19th century; earliest use found in American Antiquarian & Oriental Journal. From classical Latin superesse to be higher (than), to be on top (of), to be superior (to), to be superfluous (to), to be in excess (of a number), to remain as a residue, be left over, to remain alive, survive + -ive, probably after adessive, adessive.