One way to hold this word: everything it says comes from one object, a prism — a solid piece of glass with flat sides. That object gives two different things to talk about. There is the block itself, with its flat faces and its length; and there is what it does to light, opening plain white into a clean band of separate colours. Each meaning of prismatic picks up one of those two: the block, or the rainbow the block makes.
可以想成：這個字講的一切，都來自一塊東西——稜鏡，一塊側面平整的玻璃柱。這塊東西給了兩個可以講的點。一個是它本身：平的面、長長的柱身。另一個是它對光做的事：把白光打開，分成一條一條乾淨的顏色。prismatic 的每個意思，不是接到那塊玻璃，就是接到它分出來的那道彩虹。
From the word’s history
Borrowed from French prismatique, formed from prism plus -atic; the Greek root behind prism is connected with sawing, a thing cut into a shape with flat faces.
借自法文 prismatique，由 prism 加上 -atic 構成；prism 再往上的希臘文詞根跟「鋸」有關，指被鋸出平整面的東西。這正好對上那塊玻璃柱的樣子。
Wiktionary, "prismatic"
登入就可以看每一支怎麼連回核心畫面。