劍橋詞典 circumflex noun [C] (IN WRITING) a sign (^) over a letter , especially a vowel , that shows that it has a different pronunciation from the letter without a sign over it （標在元音上表示變音的）音調符號（＾），揚抑符 circumflex noun [C] (IN THE BODY) medical specialized Circumflex nerves , arteries , or veins bend around an organ or body part . 回旋（神經、動脈或靜脈） 返回 circumflex