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Hexagonal means “in the shape of a ” or “having six sides” — it is the adjective, not the name of the shape itself. Hexagonal tiles, a hexagonal box, a hexagonal pencil that will not roll off the desk. In science you also hear it for a kind of crystal packing. The noun is ; this -al form just says “of that six-sided kind.” Though actually, people sometimes point at a thing and call it “a hexagonal,” leaving the noun out; careful English keeps hexagonal in front of a noun, or says “a hexagonal one.”
六邊形的
組成hexagon + -al (of that kind; having that shape).
同家族的字
- hexagonthe noun this adjective comes from
- hexadecimalsame hexa- “six”
原始詞典資料2 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。
hexagonaladj/hɛkˈsæɡ.ə.nəl/
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geometrymathematicssciencesHaving six edges, or having a cross-section in the form of a hexagon.
- Nuts in engineering are generally hexagonal.
- If we just plopped down a dot for every observation we’d end up with an undifferentiated black blob, so the weathergami technique visualizes frequency of temperature pairs: we divide the chart area into a fine hexagonal grid, and then color each hexagon according to how many daily observations fall within it.
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chemistrycrystallographynatural-sciencesHaving three equal axes which cross at 60° angles, and an unequal axis which crosses the others at 90° angle.
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。