Read by: 42,845 pet lovers. Mandibulectomy is a surgical procedure in which a portion of the lower jaw is removed. This can involve both sides of the jaw or just one side. Up to three-quarters of the entire lower jaw can be removed.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  attune(Verb) to bring into musical accord. 2  attune(Verb) to tune an instrument. 3  attune(Verb) to bring into harmony or accord.
What Does ATTN Mean? ATTN means Attention. ATTN is typically used at the start of a message to ensure that the recipient pays attention. In other words, it is used to highlight that the message that follows is important. ATTN is often written in uppercase and followed an exclamation mark.