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Definition of Thallus
1. Noun. A plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytes.
Definition of Thallus
1. n. A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens.
Definition of Thallus
1. a plant body without true root, stem, or leaf [n -LI or -LUSES] : THALLOID [adj]
Medical Definition of Thallus
1. The vegetative body of a plant that is not differentiated into organs such as stems and leaves, for example algae, the gametophytes of many liverworts. (09 Oct 1997)
Lexicographical Neighbors of Thallus
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