obtuse

英 [əb'tjuːs] 美

解释

※ 提供单词"obtuse"的中文意思、发音示范及音标对照，中英文词源、例句和用法等。

obtuse 迟钝的，愚蠢的

来自obtund,使迟钝，-s,过去分词后缀。引申词义迟钝的，愚蠢的。

obtuse: obtuse: [16] The etymological meaning of obtuse is ‘beaten down, blunted’. It comes from Latin obtūsus, the past participle of obtundere, a compound verb formed from the prefix ob- ‘against’ and tundere ‘beat’ (source of English contusion and related to toil). The notion of being ‘dulled’ or ‘blunted’ led to its being used for ‘having dulled wits, stupid’, and the idea of bluntness also lies behind its geometrical use for an angle of more than 90 degrees (as contrasted with the ‘sharp’ acute angle).
=> contusion, toil
obtuse (adj.): early 15c., "dull, blunted," from Middle French obtus (fem. obtuse), from Latin obtusus "blunted, dull," also used figuratively, past participle of obtundere "to beat against, make dull," from ob "against" (see ob-) + tundere "to beat," from PIE *(s)tud-e- "to beat, strike, push, thrust," from root *(s)teu- "to push, stick, knock, beat" (cognates: Latin tudes "hammer," Sanskrit tudati "he thrusts"). Sense of "stupid" is first found c. 1500. Related: Obtusely; obtuseness.

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1. I'm a limited and obtuse clergyman while you're the expert.: 你是专家，而我是个能力有限的愚笨牧师。

4. Two opposite corners of this rhomb contain three obtuse angles of 101°95'.: 菱面体的两个对顶包含着三个101°95'的钝角。