[əˈkjuːmɪnət]adjective
(Biology)(of a plant or animal structure, e.g. a leaf) tapering to a point
(生)（植物或动物结构，如叶子）渐尖的，长尖的

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语源
late 16th cent.: from late Latin acuminatus 'pointed', from acuminare 'sharpen to a point', from acuere 'sharpen' (see acute)