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thallus

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thal⋅lus

  [thal-uhs]
Use thallus in a Sentence
–noun, plural thal⋅li  [thal-ahy] , thal⋅lus⋅es. Botany, Mycology.
a simple vegetative body undifferentiated into true leaves, stem, and root, ranging from an aggregation of filaments to a complex plantlike form.
Origin:
1820–30; < NL < Gk thallós young shoot, twig
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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thal·lus   (thāl'əs)   
n.   pl. thal·li (thāl'ī) or thal·lus·es
A plant body undifferentiated into stem, root, or leaf.

[Latin, green stalk, from Greek thallos, from thallein, to sprout.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: thal·lus
Pronunciation: 'thal-&s
Function: noun
Inflected Form: plural thal·li /'thal-"I, -"E/ or thal·lus·es
: a plant body that is characteristic of thallophytes, lacks differentiation into distinct members (as stem, leaves, and roots), and does not grow from anapical point
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

thallus thal·lus (thāl'əs)
n. pl. thal·lus·es or thal·li (thāl'ī)
A plant body or fungus undifferentiated into stem, root, or leaf.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
thallus   (thāl'əs)  Pronunciation Key 
Plural thalli (thāl'ī)
A type of body found among plants and fungi that is not differentiated into roots, stems, or leaves. Thalli are found among lichens, mosses, liverworts, and many algae, as well as the gametophyte generations of horsetails and ferns, which have rhizoids but not true roots.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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