Biology. resembling a lattice; divided or marked like latticework.


Chemistry. a substance in which a molecule of one compound fills a cavity within the crystal lattice of another compound.

Nearby words

  1. clast,
  2. clastic,
  3. clastogenic,
  4. clastothrix,
  5. clat,
  6. clathrin,
  7. clatter,
  8. claucht,
  9. claude,
  10. claude lorrain

Compare adduct.

Origin of clathrate

1615–25; < Latin clāt(h)rātus, past participle of clāt(h)rāre to fit with bars, verbal derivative of clāt(h)ra bars, lattice < Greek, Doric equivalent of Attic klâithra, plural of klêithron bar; see clithral Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for clathrate



resembling a net or lattice


chem a solid compound in which molecules of one substance are physically trapped in the crystal lattice of another

Word Origin for clathrate

C17: from Latin clāthrāre to provide with a lattice, from Greek klēthra, from klaithron a bar

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for clathrate




Having a latticelike structure or appearance.
Of or relating to inclusion complexes in a chemical compound in which molecules of one substance are completely enclosed within the crystal structure of another.


A clathrate compound, such as urea.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.