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noun (1)

sid·​er·​ite ˈsi-də-ˌrīt How to pronounce siderite (audio)
: a native ferrous carbonate FeCO3 that is a valuable iron ore


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noun (2)

: a nickel-iron meteorite

Examples of siderite in a Sentence

Recent Examples on the Web
Two years later, the Philippines’ Atomic Energy Commission contributed a siderite, a nickel-iron meteorite. IEEE Spectrum, 1 Oct. 2023 Scientists found the proto-spider frozen in the mineral siderite (no, not carbonite) in England and used an X-ray version of a CT scan to image it. Discover Magazine, 29 June 2010

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'siderite.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Noun (1)

German Siderit, from Greek sidēros iron

First Known Use

Noun (1)

1850, in the meaning defined above

Noun (2)

1866, in the meaning defined above

Time Traveler
The first known use of siderite was in 1850

Dictionary Entries Near siderite

Cite this Entry

“Siderite.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2023.

More from Merriam-Webster on siderite

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