Search Result for "involucrums":  


The Collaborative International Dictionary of English v.0.48:

Involucrum \In`vo*lu"crum\, n.; pl. L. Involucra, E.
   Involucrums. [L. See Involucre.]
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   1. (Bot.) See Involucre.
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   2. (Zool.) A sheath which surrounds the base of the lasso
      cells in the Siphonophora.
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