Definition of "APT"
APT
noun
plural APTs
(UK, rail transport) Initialism of advanced passenger train.
(cybersecurity) Initialism of advanced persistent threat.
(UK, healthcare) Initialism of anatomical pathology technologist.
(biochemistry) Initialism of acyl protein thioesterase.
proper noun
(computing) Initialism of automatically programmed tool: a high-level language for numerically controlled machine tools.