concaveとは意味・読み方・使い方

出典:『Wiktionary』 (2025/01/14 21:35 UTC 版)

語源

From 中期英語 concave, from Old French concave, from Latin concavus.

発音

(英国発音) IPA: /ˈkɒn.keɪv/, /kɒnˈkeɪv/
(米国発音) IPA: /ˈkɑn.keɪv/, /kɑnˈkeɪv/, /kənˈkeɪv/

形容詞

concave (comparative more concave, superlative most concave)

Curved like the inner surface of a sphere or bowl.
(geometry, not comparable, of a polygon) Not convex; having at least one internal angle greater than 180 degrees.
(functional analysis, not comparable, of a real-valued function on the reals) Satisfying the property that all segments connecting two points on the function 's graph lie below the function.
Hollow; empty.
- c. 1598–1600 (date written), William Shakespeare, “As You Like It”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene iv]:
  
  as concave […] as a worm-eaten nut

同意語

concavous (obsolete)

反意語

convex

派生語

biconcave
concavation
concave envelope
concave function
concavely
concaveness
concavification
concavify
concavity
concavoconcave
convexoconcave
double concave
nonconcave
planoconcave
proconcave
pseudoconcave
quasiconcave
subconcave
upper concave envelope

名詞

concave (plural concaves)

A concave surface or curve.
The vault of the sky.
One of the celestial spheres of the Ptolemaic or geocentric model of the world.

Aristotle makes [Fire] to move to the concave of the Moon. - Thomas Salusbury (1661).
(manufacturing) An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
(surfing) An indentation running along the base of a surfboard, intended to increase lift.
(skateboarding) An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength.
(gambling) A playing card made concave for use in cheating.

Coordinate term: convex

動詞

concave (third-person singular simple present concaves, present participle concaving, simple past and past participle concaved)

To render concave, or increase the degree of concavity.

派生語

concaver

ラテン語

形容詞

concave

vocative masculine singular of concavus

印欧語根
keu-	膨れること、または、アーチ型の天井や穴（cave）を表す。churchの由来として、強いこと、主人・君主。
kom	特に（過去）分詞・集合・強調を表す前置詞として、「…の近くに」「…と一緒に」という意味などを持つ印欧語根。重要な派生語は、enough, 接頭辞 co-, com-, contra-を持つ単語（cooperate, complex, contradictなど）。


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concaveとは 意味・読み方・使い方

concaveの品詞ごとの意味や使い方

concaveの学習レベル

concave

「concave」を含む例文一覧

concave

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Concave

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CONCAVE

Concave

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Concave

concave

語源

発音

形容詞

同意語

反意語

派生語

名詞

動詞

派生語

形容詞

concave

「concave」を含む例文一覧

concaveとは意味・読み方・使い方

concaveの
品詞ごとの意味や使い方