Etymology 1 
- The 34th letter of Armenian alphabet according to spelling reform of the Armenian language of 1922-1924. Represents close back rounded vowel: IPA: [u]. Transliterated as u (sometimes as ow).
Usage notes 
- This letter was created in the result of spelling reform of the Armenian language during Soviet era (1922-1924). The reform was not accepted by the Armenian diaspora outside the USSR, which continues to treat ու as a simple digraph of ո + ւ and not as an independent letter, in line with Traditional Armenian orthography.
- When used in sentence case, such as Ուրարտու (Urartu), the capital form of the letter is Ու. However, in all caps text it is ՈՒ, e.g. ՈՒՇԱԴՐՈՒԹՅՈՒՆ (UŠADRUT’YUN).
See also 
- (The Armenian script): Աա Բբ Գգ Դդ Եե Զզ Էէ Ըը Թթ Ժժ Իի Լլ Խխ Ծծ Կկ Հհ Ձձ Ղղ Ճճ Մմ Յյ Նն Շշ Ոո Չչ Պպ Ջջ Ռռ Սս Վվ Տտ Րր Ցց Ււ Փփ Քք Օօ Ֆֆ
- (Letter combinations): ու և ﬔ ﬕ ﬓ ﬗ ﬖ
- (Punctuation): ՙ ՚ ՛ ՜ ՝ ՞ ՟ ։ ֊
Etymology 2 
ու • (u)
- ես ու դու (es u du) — me and you
Usage notes 
Generally used to link two things in close relation, such as in English you and I or in the sense of combining two clauses of close relation while deemphasizing their relationship. In English, this would generally be done by combining predicates, as in I went to the store and bought ice cream. It is never used as a conjunction in the fashion of և (ev), which is used as a coordinating conjunction between two independent clauses, as in I went to the store, and I bought ice cream.
- և (ev)
- Search “ու” in the Eastern Armenian National Corpus.