- (n) (comp) native support 
- (n) luminol reaction 
- (v5k) to hear someone out anyway 
- (exp) to give (a person) first-aid 
- (n) (comp) greeting 
- (n) (comp) application package 
- (n) (comp) application program
 application software
 
- (n) law of combining volumes 
- (exp) to apply for a job
 to apply for work
 
- (n) (comp) protocol supported 
- (n) (comp) Adaptive Delta Modulation 
- (n) (comp) Adaptive Transform Coding
 ATC
 
- (n) immune response gene
 IR gene
 
- (exp) to meet force with force 
- (n) tuberculin test 
- (n) ninhydrin reaction 
- (n) Fehling's reaction 
- (n) iodoform reaction 
- (n) Wassermann reaction 
- (n) (comp) responding-(N)-address 
- (n) (comp) responding SS user 
- (n) (comp) application context 
- (n) (comp) application software 
- (n) (comp) ARU
 Audio Response Unit
 
- (n) (comp) coordinate indexing 
- (n) (comp) conforming SGML application 
- (n) (comp) Asynchronous Response Mode
 ARM
 
- (exp) Y2K compliant 
- (n) allergen skin test 
- (n) (comp) hypermedia application