U+17DD "៝" Khmer Sign Atthacan Unicode Character

U+17DD "៝" Khmer Sign Atthacan is a diacritical mark used in the Khmer script to indicate that a consonant is to be pronounced without its inherent vowel, effectively creating a short, suppressed vowel sound not unlike a subtle break or glottal stop in the context of certain transliterations. It is historically significant in the writing system of the Khmer language, particularly in the representation of Pali and Sanskrit loanwords, where it helps to preserve accurate phonetic distinctions that standard subscript consonant stacking cannot convey. Visually, this sign appears as a small, upward pointing curve or hook attached above the consonant, distinguishing it from other vowel-killing marks in the script and ensuring proper pronunciation in scholarly and liturgical texts.