loadstone

[lohd-stohn]
noun

Origin:
1505–15; earlier load lode + stone

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Collins
World English Dictionary
loadstone (ˈləʊdˌstəʊn)
 
n
a variant spelling of lodestone

lodestone or loadstone (ˈləʊdˌstəʊn)
 
n
1.  a.  a rock that consists of pure or nearly pure magnetite and thus is naturally magnetic
 b.  a piece of such rock, which can be used as a magnet and which was formerly used as a primitive compass
2.  a person or thing regarded as a focus of attraction
 
[C16: literally: guiding stone]
 
loadstone or loadstone
 
n
 
[C16: literally: guiding stone]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
lodestone also loadstone   (lōd'stōn')  Pronunciation Key 
A piece of the mineral magnetite that acts like a magnet.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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