How to say "heating" in Japanese

Choosing the right word
  • 加熱かねつJLPT N2approx.Common
    noun, suru verb, transitive verbThe common, general word for heating as the application of heat: heating food in cooking, or heating materials in a laboratory or industrial process. When you just mean 'heating' something, this is the word.
  • 加温かおん
    noun, suru verbHeating as warming: raising the temperature of something, as in warming a greenhouse or a liquid. Less common than 加熱.
  • 加熱処理かねつしょり
    nounHeating as a treatment step: heat treatment, typically of food or materials in processing. Choose it when 'heating' refers to a treatment applied to a product, not to the act of heating itself.
  • 昇温しょうおん
    noun, suru verb, transitive verb, intransitive verbA rise or increase in temperature rather than the act of heating: it suits technical descriptions where the temperature is going up. Seldom the word for heating something.
  • 火入れひいれ
    nounA less common word whose dictionary meaning is given simply as 'heating'. It is not a general equivalent of the English word; unless it is the established term in your own context, 加熱 is the safer choice.

Use 加熱, the common word, for applying heat to food or materials; 加温 for raising something's temperature, 加熱処理 for heat treatment, 昇温 for a rise in temperature, and 「火入れ」 only rarely.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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