Definition of attn in English:

attn

Line breaks: attn

abbreviation

(On an envelope or at the top of a letter or fax) attention (i.e. for the attention of): attn: Harold Carter

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Word of the day hypnopompic
Pronunciation: ˌhɪpnə(ʊ)ˈpɒmpɪk
adjective
relating to the state immediately preceding waking up