- (typography, grammar, largely obsolete) The hypodiastole, a mark used in scripta continua Classical and Byzantine Greek to note that a series of letters should be read as two words rather than all together, now identical to the comma.
- (typography, mathematics) The Greek decimal point, identical to the comma.
- (typography, grammar, uncommon) Alternative term for κόμμα (kómma) in its other uses.
The separately-encoded hypodiastole in Unicode is only intended for historical documents. The few remaining instances of hypodiastoles in modern Greek—such as ό,τι—formally use the comma instead and informally see the mark omitted. The Greek term now generally denotes the comma in its role as the decimal point.