noun
: the unpronounced iota of a Greek improper diphthong when written small beneath the preceding long vowel [as ᾳ ( āi ), ῃ ( ēi ), ῳ ( ōi )]
noun
: the unpronounced iota of a Greek improper diphthong when written small beneath the preceding long vowel [as ᾳ ( āi ), ῃ ( ēi ), ῳ ( ōi )]
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012