From adiciō + -tiō. adiectiō f (genitive <span class="searchmatch">adiectiōnis</span>); third declension addition repetition Third-declension noun. “adiectio”, in Charlton T. Lewis (1891)...
Grammaticae libri III 440.8–15: Doris in singulis partibus orationis nunc <span class="searchmatch">adiectioni</span> nunc brevitati studens barbarismos facit [qui barbarismi metaplasmi appellantur]...