hot up meaning
UK /hɒt ʌp/ US /hɑt ʌp/ 2 syllables
hot up (verb): gain heat or get hot.
hot up has 3 meanings in this dictionary.
hot up as a verb
How to pronounce hot up
hot up is pronounced /hɒt ʌp/ in British English and /hɑt ʌp/ in American English. It has 2 syllables.
More about hot up on Wikipedia.