TU

abbr. Trade Union.

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abbreviation

1. thermal unit

2. toxic unit

3. trade union

4. traffic unit

5. transmission unit

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Chem.

(formerly) thulium.

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abbrev

Trade union

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Tu (no periods),

thulium (chemical element). The accepted abbreviation today is Tm.

Tu.,

Tuesday.

T.U.,

trade union or trade unions.

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abbr. Trade Union

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tu

obs. f. thou pers. pron., to prep., two.