Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
The word interiacio could not be parsed. Trying a normal dictionary lookup:
inter-jăcĭo and inter-jĭcĭo, jēci, jectum (in tmesi: inter enim jecta est, Lucr. 3, 859), 3, v. a. [jacio], to throw or cast between; to set, place, or put between; to join or add to, to intermix (class., most freq. in the part. pass.): legionarias cohortes, Caes. B. C. 1, 73: pleraque sermone Latino, Tac. A. 2, 10: id interjecit inter individuum, atque id, quod, etc., Cic. Univ. 7: preces ct minas, Tac. A. 1, 23: moram, id. H. 3, 81.
Hence, interjectus, a, um, Part., thrown or placed between; interposed, interspersed, intervening, intermingled, intermediate; constr. with dat. or inter.