(third-person singular simple present heats up, present participle heating up, simple past and past participle heated up)
"heat-up." YourDictionary, n.d. Web. 21 June 2018. <http://www.yourdictionary.com/heat-up>.
heat-up. (n.d.). Retrieved June 21st, 2018, from http://www.yourdictionary.com/heat-up
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