字典

nonagon的意思

nonagon
英式音标['nɑnəɡɑn]
美式英标['nɒnəg(ə)n]

基本解释

n. [数] 九边形

英文词源

nonagon (n.)
"plane figure with nine sides," 1680s, a hybrid from Latin nonus "ninth" (see nones) + ending from pentagon, etc.