lodestone

lodestone — 名詞

1. a dark rock found in nature that is naturally magnetic and can pull objects made

1.名詞C1
釋義

天然磁石

具有天然磁性的鐵礦石

a dark rock found in nature that is naturally magnetic and can pull objects made of iron or steel toward it, used in the past for early compasses

例句

The museum displayed a large lodestone that had been used by ancient sailors to find their way at sea.

博物館展出了一塊古代水手曾在海上用來辨別方向的天然磁石。

history: used in early compasses and navigation

Allison tested a piece of lodestone against her metal tools to see which ones it would pull.

Allison 用一塊天然磁石靠近她的金屬工具，測試哪些會被吸引。

collocation: piece of lodestone

同義詞
  • magnetite

    the scientific mineral name for the same iron-oxide mineral; lodestone is the common term for naturally magnetic magnetite

  • magnet

    broader term that includes both natural lodestone and man-made magnets

  • loadstone

    a variant spelling of lodestone, less common

文法句型

piece of lodestone

lodestone + verb

用法筆記

Lodestone can be used as either a countable noun (a lodestone, two lodestones) or an uncountable noun (pieces of lodestone). The uncountable form is more common when referring to the material in general rather than a specific specimen.

常見錯誤

❌All heavy black rocks are lodestone.
✅Only rocks that naturally attract iron are lodestone.
💡Lodestone is defined by its magnetic property, not its colour or weight.