from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Without water, especially water of crystallization.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having little or no water

from the GNU version of the Collaborative International Dictionary of English

  • adj. Destitute of water.

from The Century Dictionary and Cyclopedia

  • Destitute of water; specifically, in chem., destitute of the water of crystallization (which see, under water): as, anhydrous salts.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. without water; especially without water of crystallization


From Greek anudros : an-, without; see a-1 + hudōr, water; see wed-1 in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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  • I learned this word from a Steve Canyon comic strip back in the 1970s. golem100

    January 2, 2007