cosKK [ˋkɔs] /ˈkɔs/連接詞1因為口語、英式,because 的簡寫I stayed home cos the weather was really awful.我待在家裡,因為天氣真的很糟。名詞1餘弦數學,cosine 的縮寫Enter the angle and the calculator gives you cos directly.輸入角度後,計算機會直接算出餘弦值。2蘿蔓生菜、長葉萵苣英式She tore up some cos and tossed it with dressing.她把一些蘿蔓生菜撕成小片,再淋上醬汁拌勻。