2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Thallus \Thal"lus\, n.; pl {Thalli}. [NL., fr Gr ? young
shoot or branch, frond.] (Bot.)
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.
From WordNet r 1.6 [wn]:
thallus
n : a plant body without true stems or roots or leaves or
vascular system; characteristic of the thallophytes
more about thallus
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Lake Atitlan, Guatemala
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