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A substance that contains no water, or very, very little water/humidity, from etymology an- (no) hydro (water). A good synonym or similar word would be hydrophobic, from etymology hydro- (water) phobos (fear). However, it does not necessarily mean that this substance may not have the appearance of a liquid.
This substance is bone dry, it's practically anhydrous.
by Ascot1111 November 10, 2018
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We couldn't find any coke, but Dave had a small amount of anhydrous to share.
by Knicke May 17, 2004
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