Word.ws English Dictionary

thallus

/ˈθæl.əs/

thallus noun: an undifferentiated plant body, such as in algae.

Noun

thallus (plural thalluses or thalli)

  1. An undifferentiated plant body, such as in algae.
    • As it flows it takes the forms of sappy leaves or vines, making heaps of pulpy sprays a foot or more in depth, and resembling, as you look down on them, the laciniated, lobed, and imbricated thalluses of some lichens; […]1854 August 9, Henry D[avid] Thoreau, “Spring”, in Walden; or, Life in the Woods, Boston, Mass.: Ticknor and Fields, →OCLC
  2. Any plant body lacking vascular tissue.

thallus meaning in Tamil

thallus in Tamil

உடலம், தலசு, பிரிவிலி

Forms of thallus

pluralthalluses
pluralthalli

Origin of thallus

From Ancient Greek θαλλός (thallós, “young shoot, twig”), from Proto-Indo-European *dʰelh₁- (“to bloom”).

Words formed from thallus

Words that rhyme with thallus

Questions about thallus

What does thallus mean?
Thallus means an undifferentiated plant body, such as in algae.
What is thallus in Tamil?
Thallus in Tamil is உடலம், தலசு, பிரிவிலி. See Thallus meaning in Tamil.
What part of speech is thallus?
Thallus is a noun.
How do you pronounce thallus?
Thallus is pronounced /ˈθæl.əs/ (UK).
What is the plural of thallus?
The plural of thallus is thalluses.

Words near thallus in the dictionary

  1. thallose
  2. thallospore
  3. thallospores
  4. thallotoxicosis
  5. thallous
  6. thallus
  7. thalluses
  8. thallyle
  9. thallyles
  10. Thalman
  11. Thalmans

Source and license

Adapted from Wiktionary: thallus (page history and authors); thallus (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-thallus.wav.

Cite this entry: “thallus.” Word.ws, https://word.ws/thallus. Based on Wiktionary, CC BY-SA 4.0.