a-posteriori
 US /ˌeɪ pɑːˌstɪr.iˈɔː.ri/
 UK /ˌeɪ pɑːˌstɪr.iˈɔː.ri/
1. 
a posteriori
in a way that is based on known facts or on what has been seen to happen:
:
• 
This assumption will be verified a posteriori.
1. 
a posteriori
based on known facts or on what has been seen to happen:
:
• 
This result gives an a posteriori justification of the method used.