Definition of UHT abbreviation from the Oxford Advanced Learner's Dictionary

 

UHT

 abbreviation
abbreviation
BrE BrE//ˌjuː eɪtʃ ˈtiː//
 
; NAmE NAmE//ˌjuː eɪtʃ ˈtiː//
 
(British English)
 
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ultra heat treated. UHT milk has been heated to a very high temperature in order to make it last for a long time.