U+1F31 "ἱ" Greek Small Letter Iota with Dasia Unicode Character

U+1F31 "ἱ" Greek Small Letter Iota with Dasia is a polytonic Greek letter that represents the vowel iota combined with the dasia or rough breathing mark. This diacritical mark indicates an initial aspiration, meaning the character is pronounced with an 'h' sound before the vowel, similar to the English 'hi' or the Greek letter eta with rough breathing. Historically used in ancient and medieval Greek texts, this character appears in words where the iota begins a syllable or word and requires aspiration, such as in certain forms of the verb "ἱστορέω" meaning to inquire or to narrate. It is part of the Unicode Greek Extended block and is encoded for the accurate representation of classical Greek orthography.