喜樂美語
  1. 1

    When something is convex, it curves out towards you — like the outside of a ball, or the front of your eye. Convexity is that outward curve, or the fact of having it. You meet the word most in maths, science, and design: a convex lens is thicker in the middle and can bring light together; a convex mirror bulges out and makes things look smaller. The everyday opposite is a hollow, bowl-like curve. Though actually, specialists also stretch convexity onto graphs and even onto money maths, where it names how a line or a price bends — still the same “curves out” picture, just drawn on paper. For most , the physical shape is the meaning that matters, and it is a calm, technical word, not an everyday one.

    凸性；凸面（向外凸出）

    例句逐字對照、搭配詞、易混淆字

    這一義的完整解析還沒打開。訂閱後可以看到例句怎麼拆、常跟哪些字一起出現， 以及容易跟它搞混的字。

    看看訂閱內容

組成convex (curved outwards) + -ity (Latin -itās through French -ite: turns an adjective into a noun meaning “the quality of being that way”).

同家族的字

  • convexthe adjective this noun is built from
  • convexlythe adverb, convex + -ly

原始詞典資料3 筆記錄

以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。

convexitynoun

  • 1

    The state of being convex.

  • 2

    A convex line or surface.

  • 3

    businessfinanceA measure of the curvature in the relationship between the prices and yields of bonds.

資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。