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Definition of "sorus" [‖So•rus]

  • A cluster of sporangia borne on the underside of a fern frond. (noun)
  • A reproductive structure in certain fungi and lichens. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "sorus" in a sentence
  • "Indusium cup-shaped, fixed beneath the sorus, supported by the tooth of a leaf; sporangia borne in an elevated, globular receptacle open at the top."
  • "Indusium minute, concealed beneath the sorus, divided into a few beaded hairs."
  • "Sori (singular _sorus_, a heap), or fruit dots may be naked as in the polypody, but are usually covered with a thin, delicate membrane, known as the indusium (Greek, a dress, or mantle)."