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obtuse

 - 5 dictionary results
Obtuse angles & triangles
Practice obtuse angles, triangles, and everything else in K-6 math.
www.ixl.com/math

ob⋅tuse

  [uhb-toos, -tyoos]
Use obtuse in a Sentence
–adjective
1. not quick or alert in perception, feeling, or intellect; not sensitive or observant; dull.
2. not sharp, acute, or pointed; blunt in form.
3. (of a leaf, petal, etc.) rounded at the extremity.
4. indistinctly felt or perceived, as pain or sound.
Origin:
1500–10; < L obtūsus dulled (ptp. of obtundere), equiv. to ob- ob- + tūd-, var. s. of tundere to beat + -tus ptp. suffix, with dt > s

Related forms:
ob⋅tuse⋅ly, adverb
ob⋅tuse⋅ness, noun

Synonyms:
1. unfeeling, tactless, insensitive; blind, imperceptive, unobservant; gauche, boorish; slow, dim.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To obtuse
Obtuse angles & triangles
Practice obtuse angles, triangles, and everything else in K-6 math.
www.ixl.com/math
ob·tuse   (ŏb-tōōs', -tyōōs', əb-)   
adj.   ob·tus·er, ob·tus·est

    1. Lacking quickness of perception or intellect.

    2. Characterized by a lack of intelligence or sensitivity: an obtuse remark.

    3. Not distinctly felt: an obtuse pain.

    4. Not sharp, pointed, or acute in form; blunt.

    5. Having an obtuse angle: an obtuse triangle.

    6. Botany. Having a blunt or rounded tip: an obtuse leaf.

    1. Not sharp, pointed, or acute in form; blunt.

    2. Having an obtuse angle: an obtuse triangle.

    3. Botany. Having a blunt or rounded tip: an obtuse leaf.


[Middle English, from Old French, from Latin obtūsus, past participle of obtundere, to blunt; see obtund.]
ob·tuse'ly adv., ob·tuse'ness n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

obtuse 
1509, from M.Fr. obtus (fem. obtuse), from L. obtusus "blunted, dull," pp. of obtundere "to beat against, make dull," from ob "against" + tundere "to beat," from PIE *(s)tud- "to beat, strike, push, thrust" (cf. L. tudes "hammer," Skt. tudati "he thrusts"). Sense of "stupid" is first found 1509. The verb obtund (trans.) "to render dead, make dull" has occasionally been used, esp. in medical jargon, since c.1400.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: ob·tuse
Pronunciation: äb-'t(y)üs, &b-
Function: adjective
Inflected Forms: ob·tus·er; -est
1 : lacking sharpness or quickness of sensibility or intellect
2 : not pointed or acute <obtuse pain>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

obtuse ob·tuse (ŏb-t&oomacr;s', -ty&oomacr;s', əb-)
adj.

  1. Lacking quickness of perception or intellect.

  2. Not sharp or acute; blunt.

ob·tuse'ness n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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