英语单词

词典成语诗词造句字典单词小说古文名言

prostomium

英 [prəʊ'stəʊmɪəm] 美 [pro'stomiəm]

n. [无脊椎] 口前叶

英文词源

prostomium (n.): 1870, Latinized form of Greek prostomion "fore-mouth, something before the mouth," from pro "before" (see pro-) + stoma "mouth" (see stoma).