from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A plant body undifferentiated into stem, root, or leaf.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An undifferentiated plant body, such as in algae.
- n. Any plant body lacking vascular tissue.
from the GNU version of the Collaborative International Dictionary of English
- 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.
from The Century Dictionary and Cyclopedia
- n. In botany, a vegetative body or plant-body undifferentiated into root, stem, or leaves; the plant-body characteristic of the Thallophyta. Also thalamus. See cut under applanate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytes
Latin, green stalk, from Greek thallos, from thallein, to sprout.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek θαλλός (thallos, "young shoot, twig"). (Wiktionary)