Definition of abbreviation (noun) -failure to appear; state of being away; state of being not present
Part of speech:Noun
He has certainly noticed our absence by now.
When you say something/someone is conspicuous by its/his/her absence, that means that the absence/omission is extremely obvious to people in general.
The two men made a handshake deal in the absence of solicitors.
Modern scholars believe Geoffry of Monmouth was so frustrated by the absence of a historical history of his people, he took a few legends and recreated them into coherent, but imaginative story.