Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Of, resembling, or constituting a thallus.
from The Century Dictionary.
- In botany, resembling or consisting of a thallus.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Bot.) Resembling, or consisting of, thallus.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Of or pertaining to a
thallus . - adjective botany Of a
plant ,alga , orfungus lacking complex organization, especially lacking distinct stems, roots, or leaves.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective of or relating to or resembling or consisting of a thallus
Etymologies
Sorry, no etymologies found.
Support
Help support Wordnik (and make this page ad-free) by adopting the word thalloid.
Examples
-
The familiar duckweed which covers the surface of a pond consists of a tiny green "thalloid" shoot, one, that is, which shows no distinction of parts -- stem and leaf, and a simple root growing vertically downwards into the water.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 Various
-
The Marchantiales are a series of thalloid forms, in which the structure of the thallus is specialized to enable them to live in more exposed situations.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
-
The characteristics, then, of the mosses are, that the sexual generation is leafy, the one or two asexual generations are thalloid, and that the spore-bearing generation is in parasitic connection with the sexual generation.
Scientific American Supplement, No. 531, March 6, 1886 Various
-
The sexual generation is a small green thalloid structure called a prothallium, which bears antheridia and archegonia, each archegonium having a neck-canal and oosphere, which is fertilized just as in the moss.
Scientific American Supplement, No. 531, March 6, 1886 Various
-
In thalloid forms a thinner marginal expansion or a definite wing increasing the surface exposed to the light can be distinguished from a thicker midrib serving for storage and conduction.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
-
The spore on germination forms a short filament which soon broadens out into the thalloid protonema.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
-
In thalloid forms fimbriate or lobed margins or outgrowths from the surface lead to the same result.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
-
The lower members of the Jungermanniales are also thalloid, but the thallus never has the complicated structure characteristic of the Marchantiales, and progress is in the direction of the differentiation of the plant into stem and leaf.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
-
In thalloid forms the sexual organs are often sunk in depressions, while in the foliose forms protection is afforded by the surrounding leaves.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
-
The protonema forms a flat, lobed, thalloid structure attached to the soil by rhizoids, and the plants arise from marginal cells.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.