Challenge diamond heater. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. I like a big challenge and they don't come much bigger than this. CHALLENGE definition: 1. CHALLENGE meaning: 1 : to say or show that (something) may not be true, correct, or legal dispute; 2 : to question the action or authority of (someone) Define challenge. The meaning of CHALLENGE is to dispute especially as being unjust, invalid, or outmoded : impugn. 1. Jun 21, 2025 ยท The term "challenge" refers to a difficult task, an invitation to compete, a question of validity, or a stimulating test of one's abilities. A call to engage in a contest, fight, or competition: a challenge to a duel. Challenge definition: a call or summons to engage in any contest, as of skill, strength, etc. challenge synonyms, challenge pronunciation, challenge translation, English dictionary definition of challenge. zrl iayhsl sort atu0 6tnbet sktv u7nom tmgbbo 18zo dvs