noun
Katakana noun for heat, often with an English-flavored, product, sports, technical, or branding feel. In ordinary everyday Japanese, 熱 is usually the more general word.
ヘアアイロンのヒートで髪が傷むことがある。
Hair can be damaged by the heat of a hair iron.
noun, noun or participle which takes 'suru', intransitive verb
heat up; become intense
Used especially as ヒートする for a discussion, contest, crowd, or situation becoming emotionally or competitively intense. Literal heating is possible in some technical or casual contexts, but 熱くなる or 加熱する may be more ordinary depending on context.
議論がヒートして、会議はなかなか終わらなかった。
The discussion heated up, and the meeting did not end easily.
下り坂ではブレーキがヒートしないように気をつける。
On a downhill road, be careful that the brakes do not heat up.