DIACRITICAL

diacritic, diacritical

(adjective) capable of distinguishing; “students having superior diacritic powers”; “the diacritic elements in culture”- S.F.Nadel

Source: WordNet® 3.1

Etymology

Adjective

diacritical (comparative more diacritical, superlative most diacritical)

Capable of distinguishing or of making a distinction.

Of, pertaining to, or serving as a diacritic

• A. J. Ellis

Noun

diacritical (plural diacriticals)

A diacritic (mark).

Source: Wiktionary

Di`a*crit"ic, Di`a*crit"ic*al, a. Etym: [Gr. Critic.]

Definition: That separates or distinguishes; -- applied to points or marks used to distinguish letters of similar form, or different sounds of the same letter, as, a, â, ä, o, ô, etc. "Diacritical points." Sir W. Jones. A glance at this typography will reveal great difficulties, which diacritical marks necessarily throw in the way of both printer and writer. A. J. Ellis.

Source: Webster’s Unabridged Dictionary 1913 Edition