a flat shape with nine straight sides and nine angles Topics Colours and Shapesc2九边形;九角形 Word Originmid 17th cent.: formed irregularly from Latin nonus ‘ninth’, on the pattern of words such as hexagon.
👨🏻🏫 Mr. Ng 牛津詞典 📚 – oxford.mister5️⃣.net
切換為繁體中文