凸 🔊

网络内容摘要 (Web Content Summary):

凸（拼音：tū）是一个汉字，核心含义是“高出周围”、“向外鼓起”。它常用来描述物体表面高起的状态，例如“凸出”表示突出于表面。 凸 (pinyin: tū) is a Chinese character meaning “protruding” or “raised above the surroundings.” It is commonly used to describe a bulged or outwardly raised surface, such as in the word “凸出” (“to protrude”).

• 字源与象形：“凸”是较晚出现的字（后起字），为与“凹”相对。字形象水平方向鼓起的形状，生动表达了其本义。 Origin & Etymology: “凸” is a character that appeared relatively late in Chinese writing, created as the opposite of “凹” (concave). The character visually suggests a raised or bulging shape.
• 易混淆点： “凸”与“凹”易混；“凸”为高出，反义字“凹”为低陷。 Common confusion: “凸” (convex) is often confused with “凹” (concave); “凸” means raised, while “凹” means sunken or below the surface.
• 相关常用词： 如“凸出”、“凸面镜”（convex mirror）等。 Common words: Examples include “凸出” (to protrude), “凸面镜” (convex mirror).

暂无发现特别的文化故事或成语与“凸”直接相关。 No notable idioms or cultural stories are directly associated with “凸”.