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Molybdenum is a hard, silver-white metal. On the science list of elements its symbol is Mo. You will not buy a lump of it in a shop; it lives in labs, factories, and steel. People add a little to steel so the steel stays strong at high heat and does not wear or rust as easily — so it turns up in tools, engines, and . The name is from a Greek word for lead, because the ore looked like lead; though actually it is not lead at all, and chemists gave it its own name in the late 1700s. In English it is a technical word. Say it slowly: mə-LIB-də-nəm.
鉬
組成From New Latin molybdaenum, from molybdaena (lead-like minerals), from Greek molúbdaina “a piece of lead,” from mólubdos “lead.” Scholars trace that Greek word to an older word meaning “dark.” Chemists added -um, the ending many element names take. English has used the name since the late 1700s.
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。
molybdenumnoun/məˈlɪbdɪnəm/
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A chemical element (symbol Mo) with an atomic number of 42: a silvery metal, not found as a free element, used in steel alloys.
- The metals at preſent amount to 21 ; only 11 of which were known before the year 1730. Their names are gold, ſilver, platinum, mercury, copper, iron, tin, lead, zinc, antimony, biſmuth, arſenic, cobalt, nickel, manganeſe, tungſten, molybdenum, uranium, tellurium, titanium, chromum.
- Technical terms like ferrite, perlite, graphite, and hardenite were bandied to and fro, and when Paget glibly brought out such a rare exotic as ferro-molybdenum, Benson forgot that he was a master ship-builder, […]
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A single atom of this element.
- a quadruple bond between molybdenums
- Thus in M₄O₁₁, for example, ¾ of the molybdenums are octahedrally connected and ¼ are tetrahedrally coordinated and, furthermore, the formula is compatible with the existence of one Mo(IV) for every three Mo(VI), so at first glance the compound might appear to be a class I mixed valence system.
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。