Definition of triply adverb from the Oxford Advanced Learner's Dictionary

 

triply

 adverb
adverb
BrE BrE//ˈtrɪpli//
 
; NAmE NAmE//ˈtrɪpli//
 
 
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three times; in three ways; three times as much The water was triply distilled. Building an instrument for space astronomy is triply difficult.