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Any of a group of organisms, including the algae, fungi, and lichens, that show no differentiation into stem, root, or leaf and were formerly regarded as constituting a subkingdom of the plant kingdom.

thal′lo·phyt′ic (-fĭt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) obsolete any organism of the former division Thallophyta, lacking true stems, leaves, and roots: includes the algae, fungi, lichens, and bacteria, all now regarded as separate phyla
[C19: from New Latin thallophyta, from Greek thallos a young shoot + phuton a plant]
thallophytic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈθæl əˌfaɪt)

any of the Thallophyta, a plant division in some older classification schemes, comprising algae, fungi, and lichens.
[1850–55; < New Latin Thallophyta. See thallus, -o-, -phyte]
thal`lo•phyt′ic (-ˈfɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


A plantlike organism that resembles a thallus, such as a fungus.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thallophyte - any of a group of cryptogamic organisms consisting principally of a thallus and thus showing no differentiation into stem and root and leaf
cryptogam - formerly recognized taxonomic group including all flowerless and seedless plants that reproduce by means of spores: ferns, mosses, algae, fungi
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Thallophyte vegetation supposedly had occupied terrestrial habitats long before vascular land plant vegetation evolved (BOMFLEUR & al., 2010).
Dubai: Try spelling the words syzygy, thallophyte, xanthoma, taupe or simulacrum each in less than two minutes on the spot without the aid of your trusted friend -- Google -- or a dictionary?
The protagonists of homologous and antithetic alternation sought clues to the origin of the sporophyte in the life cycles of thallophytes. The great diversity of thallophyte life cycles meant examples could be found that appeared to fit either theory.
-- William James Up from the mineral and mud and ore, from mildew and bacterium and mold and thallophyte and spore to fungus, rust, and diatom; from moss and fern and flowering seed to coral, fluke, and sponge, and from flatworm and snail and centipede to swamp to land until we come to mouse, to monkey--to the brain that grew in tandem with the thumb: To tell exactly how we came from clay is easy.
As compared to seaweeds, which are thallophytes, seagrasses are monocotyledons that is, flowering plants.