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BNC: 47643 COCA: 36751

subtend

verb
/səbˈtend/
/səbˈtend/
(geometry几何)
Verb Forms
present simple I / you / we / they subtend
/səbˈtend/
/səbˈtend/
he / she / it subtends
/səbˈtendz/
/səbˈtendz/
past simple subtended
/səbˈtendɪd/
/səbˈtendɪd/
past participle subtended
/səbˈtendɪd/
/səbˈtendɪd/
-ing form subtending
/səbˈtendɪŋ/
/səbˈtendɪŋ/
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  1. subtend something (of a line or chord直线或弦) to be opposite to an arc or angle对向(弧或角)
    Word Originlate 16th cent. : from Latin subtendere, from sub- ‘under’ + tendere ‘stretch’.

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