thallus

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈθæləs/US:USA pronunciation: respellingUSA pronunciation: respelling(thal′əs)

Inflections of 'thallus' (n):
thalluses
npl
thalli
npl

WordReference Random House Unabridged Dictionary of American English © 2025
thal•lus  (thal′əs),USA pronunciation n., pl. thal•li (thal′ī),USA pronunciation thal•lus•es. [Bot., Mycol.]
  1. Botany, Fungia simple vegetative body undifferentiated into true leaves, stem, and root, ranging from an aggregation of filaments to a complex plantlike form.
  • Greek thallós young shoot, twig
  • Neo-Latin
  • 1820–30

Collins Concise English Dictionary © HarperCollins Publishers::
thallus / ˈθæləs/ (thalli / ˈθælaɪ/, thalluses)
  1. the undifferentiated vegetative body of algae, fungi, and lichens
Etymology: 19th Century: from Latin, from Greek thallos green shoot, from thallein to bloomˈthalloid
'thallus' also found in these entries (note: many are not synonyms or translations):
Eumycota - Thalia - angiocarpous - cupule - endocarpoid - eucarpic - foliose - gametothallus - gonidium - gymnocarpous - holocarpic - hypothallus - isidium - lamina - lichen - nemathecium - prothallus - red seaweed - rock tripe - soredium - stipe - thalloid - thallophyte

Forum discussions with the word(s) "thallus" in the title:


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