First Known Use: 1829
Dictionary
thallus
noun thal·lus \ˈtha-ləs\
plural thal·li \ˈtha-ˌlī, -ˌlē\ or thal·lus·es
Definition of THALLUS
: a plant body that lacks differentiation into distinct parts (as stem, leaves, and roots), does not grow from an apical point, and is characteristic of organisms formerly classified as thallophytes
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Origin of THALLUS
New Latin, from Greek thallos, from thallein to sprout; akin to Armenian dalar green, fresh, Albanian dal I come forth
Medical Dictionary
thallus
noun thal·lus \ˈthal-əs\
plural thal·li \ˈthal-ˌī, -ˌē\ or thal·lus·es
Medical Definition of THALLUS
: a plant or plantlike body (as of an alga, fungus, or moss) that lacks differentiation into distinct members (as stem, leaves, and roots) and does not grow from an apical point
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