Definition of liquefy verb from the Oxford Advanced Learner's Dictionary

 

liquefy

 verb
verb
BrE BrE//ˈlɪkwɪfaɪ//
 
; NAmE NAmE//ˈlɪkwɪfaɪ//
 
Verb Forms present simple I / you / we / they liquefy
BrE BrE//ˈlɪkwɪfaɪ//
 
; NAmE NAmE//ˈlɪkwɪfaɪ//
 
he / she / it liquefies
BrE BrE//ˈlɪkwɪfaɪz//
 
; NAmE NAmE//ˈlɪkwɪfaɪz//
 
past simple liquefied
BrE BrE//ˈlɪkwɪfaɪd//
 
; NAmE NAmE//ˈlɪkwɪfaɪd//
 
past participle liquefied
BrE BrE//ˈlɪkwɪfaɪd//
 
; NAmE NAmE//ˈlɪkwɪfaɪd//
 
-ing form liquefying
BrE BrE//ˈlɪkwɪfaɪɪŋ//
 
; NAmE NAmE//ˈlɪkwɪfaɪɪŋ//
 
 
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[intransitive, transitive] liquefy (something) (formal) to become liquid; to make something liquid Above a certain temperature it is impossible to liquefy a gas. The cheese had liquefied so we poured it over the bread. Word Origin late Middle English: from French liquéfier from Latin liquefacere ‘make liquid’, from liquere ‘be liquid’.
See the Oxford Advanced American Dictionary entry: liquefy