heaten

• IPA^(key): /ˈhiːtən/
• Rhymes: -iːtən

From heat +‎ -en.

heaten (third-person singular simple present heatens, present participle heatening, simple past and past participle heatened)

1. (ambitransitive, literal, figurative) To increase in heat; make or become hotter
   • 1993, James A. Michener, Alaska:

     In 1958, when the debate heatened, an elderly gentleman of excellent reputation stepped regally into a Senate hearing room in Washington prepared to testify against statehood for Alaska.

   • 2007, David Russell, Dreality: A Story about Returning Home, page 353:

     Feeling it, the man's cheeks heatened like those of the accosted youngster amidst the hanging coats and paired-up galoshes.

Probably formed on the analogy of beat:beat:beaten by speakers who use heat or het for the simple past of heat (“to make hot”).

• hetten (dialectal)

heaten

1. (rare, nonstandard) past participle of heat
   • 2010 October 20, Jagannadham Thunuguntla, It was Cyclone in 2007, its just Drizzle in 2010 - Oct, 2010, SSRN, published 30 January 2011, →DOI:

     The coincidence of the fact that Sensex crossing 20,000 level both in late 2007 and in 2010, and also both the years seeing the largest issues namely Reliance Power (in 2007) and Coal India (in 2010), has heaten up the discussion regarding the parallels.

• ethane

heaten

1. (Early Middle English) alternative form of heten (“to heat”)

heaten

1. definite plural of heat