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clathrate

clath·rate [ kláth ràyt ]


noun  (plural clath·rates)
Definition:
 
crystal with embedded substance: a solid compound with a physical structure in which molecules of one substance are fully enclosed within the crystal structure of another



adjective 
Definition:
 
1. with crystal-embedded substance: having molecules of one substance enclosed fully within the crystal structure of another substance

2. like lattice: resembling a lattice in structure or appearance

[Mid-19th century. < Latin clathrat-, past participle of clathrare "fit with bars" < clathri "lattice" < Greek klēthra "bars"]
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