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

 

preheat

 verb
verb
BrE BrE//ˌpriːˈhiːt//
 
; NAmE NAmE//ˌpriːˈhiːt//
 
Verb Forms present simple I / you / we / they preheat
BrE BrE//ˌpriːˈhiːt//
 
; NAmE NAmE//ˌpriːˈhiːt//
 
he / she / it preheats
BrE BrE//ˌpriːˈhiːts//
 
; NAmE NAmE//ˌpriːˈhiːts//
 
past simple preheated
BrE BrE//ˌpriːˈhiːtɪd//
 
; NAmE NAmE//ˌpriːˈhiːtɪd//
 
past participle preheated
BrE BrE//ˌpriːˈhiːtɪd//
 
; NAmE NAmE//ˌpriːˈhiːtɪd//
 
-ing form preheating
BrE BrE//ˌpriːˈhiːtɪŋ//
 
; NAmE NAmE//ˌpriːˈhiːtɪŋ//
 
Preparing food
 
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preheat something to heat an oven to a particular temperature before you put food in it to cook See related entries: Preparing food
See the Oxford Advanced American Dictionary entry: preheat