Home/deltiologydeltiology/del-tee-ol-uh-jee/US // ˌdɛl tiˈɒl ə dʒi //UK // (ˌdɛltɪˈɒlədʒɪ) //脱落学,脱氧核糖核酸,脱落物学,脱口秀Definitionsn.名词 noun1: the hobby of collecting post cards.Level 4Browse all words →