Crossword Dictionary

tittle
A tittle or superscript dot is a small distinguishing mark, such as a diacritic in the form of a dot on a lowercase i or j. The tittle is an integral part of the glyph of i and j, but diacritic dots can appear over other letters in various languages. In most languages, the tittle of i or j is omitted when a diacritic is placed in the tittle's usual position (as à or ĵ), but not when the diacritic appears elsewhere (as į, ɉ).
"small stroke or point in writing," late 14c. (Wyclif, in Matthew v.18), translating Latin apex in Late Latin sense of "accent mark over a vowel," which itself translates Greek keraia (literally "a little horn"), used by the Greek grammarians of the accents and diacritical points, in this case a Biblical translation of Hebrew qots, literally "thorn, prick," used of the little lines and projections by which the Hebrew letters of similar form differ from one another.