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

Origin of THALLUS

New Latin, from Greek thallos, from thallein to sprout; akin to Armenian dalar green, fresh, Albanian dal I come forth
First Known Use: 1829
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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