"Cheng-hoat" pán-pún chi-kan bô-kāng--ê tē-hng

[[File:Watervapor cup.jpg|right|225px|thumb|Cheng-hoat ê hiān-siōng]]

'''Cheng-hoat''' (蒸發; [[Eng-gí]]: {{lang|en|''evaporation''}}) sī [[e̍k-thé]] hun-chú ùi piáu-bīn [[khì-hòa]] ê [[bu̍t-lí]] kòe-têng. Cheng-hoat chham lēng-gōa chi̍t chióng khì-hòa kòe-têng [[hùi-thêng]] bô-kāng, ē-sái tī jīm-hô [[un-tō͘]] hā hoat-seng.