Thallus definition

thăləs
Frequency:
A plant body undifferentiated into stem, root, or leaf.
noun
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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.
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A plant body undifferentiated into stem, root, or leaf.
noun
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The nonvascular plant body of a thallophyte.
noun
2
1
The main body of an alga, fungus, or lichen.
noun
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The main body of an alga, fungus, or lichen.
noun
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1
(botany) An undifferentiated plant body, such as in algae.
noun
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(botany) Any plant body lacking vascular tissue.
noun
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Other Word Forms

Noun

Singular:
thallus
Plural:
thalli

Origin of thallus

  • Latin green stalk from Greek thallos from thallein to sprout

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek θαλλός (thallos, “young shoot, twig"), from Proto-Indo-European *dÊ°al (“to bloom"),

    From Wiktionary