UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/rɪˈfrɪdʒərənt/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/rɪˈfrɪdʒərənt/ ,USA pronunciation: respelling(ri frijər ənt)

WordReference Random House Unabridged Dictionary of American English © 2020
re•frig•er•ant  (ri frijər ənt),USA pronunciation adj. 
  1. refrigerating;
  2. reducing bodily heat or fever.

  1. a refrigerant agent, as a drug.
  2. Chemistrya liquid capable of vaporizing at a low temperature, as ammonia, used in mechanical refrigeration.
  3. Chemistrya cooling substance, as ice or solid carbon dioxide, used in a refrigerator.
  • Latin refrīgerant- (stem of refrīgerāns), present participle of refrīgerāre. See refrigerate, -ant
  • 1590–1600

Collins Concise English Dictionary © HarperCollins Publishers::
refrigerant /rɪˈfrɪdʒərənt/ n
  1. a fluid capable of changes of phase at low temperatures: used as the working fluid of a refrigerator
  2. a cooling substance, such as ice or solid carbon dioxide
  3. an agent that provides a sensation of coolness or reduces fever
  1. causing cooling or freezing
WordReference Random House Learner's Dictionary of American English © 2020
re•frig•er•ate /rɪˈfrɪdʒəˌreɪt/USA pronunciation   v. [+ object], -at•ed, -at•ing. 
  1. to make or keep cold or cool, in order to preserve or keep fresh.
re•frig•er•ant /rɪˈfrɪdʒərənt/USA pronunciation  adj., n. [countable]a toxic refrigerant.[uncountable]not enough refrigerant in the air-conditioner.
re•frig•er•a•tion /rɪˌfrɪdʒəˈreɪʃən/USA pronunciation  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2020
re•frig•er•ate  (ri frijə rāt′),USA pronunciation v.t.,  -at•ed, -at•ing. 
  1. to make or keep cold or cool, as for preservation.
re•friger•a′tive, re•frig•er•a•to•ry  (ri frijə rāt′),USA pronunciation adj. 
  • Latin refrīgerātus, past participle of refrīgerāre to make cool, equivalent. to re- re- + frīgerāre to make cool, derivative of frīgus cold; see -ate1
  • 1525–35;

'refrigerant' also found in these entries (note: many are not synonyms or translations):
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