Home/thermionthermion/thurm-ahy-uhn, -on; thur-mee-uhn/US // ˈθɜrmˌaɪ ən, -ɒn; ˈθɜr mi ən //UK // (ˈθɜːmɪən) //热离子,热力,热电联,热电偶Definitionsn.名词 noun1 Physics.: an ion emitted by incandescent material.Level 4Browse all words →