yat · noun1
From a Slavic language; compare Russian ять (jatʹ).
yat · noun2
Spelling variant.
Yat · proper noun, noun3
From the phrase "where y'at?" (“how are you?”, literally “where are you at?”).
Etymology from Wiktionary, CC BY-SA 4.0.
yat
Today it means: A vowel letter of the Cyrillic and Glagolitic alphabet (Cyrillic capital Ѣ, Cyrillic small ѣ, Glagolitic ⱑ), no longer in current use Full definition →