thallus

[ thal-uhs ]

/ ˈθæl əs /

noun, plural thal·li [thal-ahy], /ˈθæl aɪ/, 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 of thallus

1820–30; <New Latin <Greek thallós young shoot, twig

Words nearby thallus

thallium sulfate, thallo-, thalloid, thallophyte, thallous, thallus, thalweg, Thamar, Thames, Thames River, thamin

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for thallus

The colors of the Thallus and apothecia of Lichens—their causes, and the circumstances which modify and alter them.
The Commercial Products of the Vegetable Kingdom|P. L. Simmonds
Another method is by the agency of little spores (zoospores) that are produced at the edges or extremities of the thallus.
The Sea Shore|William S. Furneaux
Flowering plants cannot have directly arisen out of thallus plants, nor out of mosses; but only out of ferns, or Filicines.
The History of Creation, Vol. II (of 2)|Ernst Haeckel
They are distinguished by possessing as gonidia algae foreign to the ordinary part of the thallus.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 5|Various

The thallus or body of the lichen is of very different form in different genera.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 5|Various

British Dictionary definitions for thallus

thallus

/ (ˈθæləs) /

noun plural thalli (ˈθælaɪ) or thalluses

the undifferentiated vegetative body of algae, fungi, and lichens

Derived forms of thallus

thalloid, adjective

Word Origin for thallus

C19: from Latin, from Greek thallos green shoot, from thallein to bloom

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

Medical definitions for thallus

thallus

[ thăl′əs ]

n. pl. thal•lus•es

A plant body or fungus undifferentiated into stem, root, or leaf.

Scientific definitions for thallus

thallus

[ thăl′əs ]

Plural thalli (thăl′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.

单词	thallus
释义	thallus [ thal-uhs ] / ˈθæl əs / noun, plural thal·li [thal-ahy], /ˈθæl aɪ/, 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 of thallus 1820–30; <New Latin <Greek thallós young shoot, twig Words nearby thallus thallium sulfate, thallo-, thalloid, thallophyte, thallous, thallus, thalweg, Thamar, Thames, Thames River, thamin Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for thallus The colors of the Thallus and apothecia of Lichens—their causes, and the circumstances which modify and alter them. The Commercial Products of the Vegetable Kingdom\|P. L. Simmonds Another method is by the agency of little spores (zoospores) that are produced at the edges or extremities of the thallus. The Sea Shore\|William S. Furneaux Flowering plants cannot have directly arisen out of thallus plants, nor out of mosses; but only out of ferns, or Filicines. The History of Creation, Vol. II (of 2)\|Ernst Haeckel They are distinguished by possessing as gonidia algae foreign to the ordinary part of the thallus. Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 5\|Various The thallus or body of the lichen is of very different form in different genera. Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 5\|Various British Dictionary definitions for thallus thallus / (ˈθæləs) / noun plural thalli (ˈθælaɪ) or thalluses the undifferentiated vegetative body of algae, fungi, and lichens Derived forms of thallus thalloid, adjective Word Origin for thallus C19: from Latin, from Greek thallos green shoot, from thallein to bloom 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 Medical definitions for thallus thallus [ thăl′əs ] n. pl. thal•lus•es 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. Scientific definitions for thallus thallus [ thăl′əs ] Plural thalli (thăl′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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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