Definitions
from The Century Dictionary.
- noun In botany, a plant in which the growth of the stem is in successive concentric layers.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) A plant belonging to one of the greater part of the vegetable kingdom, and which the plants are characterized by having c wood bark, and pith, the wood forming a layer between the other two, and increasing, if at all, by the animal addition of a new layer to the outside next to the bark. The leaves are commonly netted-veined, and the number of cotyledons is two, or, very rarely, several in a whorl. Cf.
endogen .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany A
plant characterized bywood ,bark andpith , the wood forming a layer between the other two, andgrowth only occurring on the outside.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun flowering plant with two cotyledons; the stem grows by deposit on its outside
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
exo- + -gen: compare French exogène.
Support
Help support Wordnik (and make this page ad-free) by adopting the word exogen.
Examples
-
Smilax belongs to a transition class, partaking somewhat of the nature of endogen and of exogen.
Scientific American Supplement, No. 623, December 10, 1887 Various
-
The former sees a tree in all its glory, where the latter sees an exogen with a pair of cotyledons.
-
The former sees a tree in all its glory, where the latter sees an exogen with a pair of cotyledons.
The Unseen World and Other Essays John Fiske 1871
-
Standardmetoden i forskningen är att hitta någon exogen källa till variation i mängden bistånd som olika länder får: Ett så kallat instrument för bistånd.
Berghs Betraktelser 2009
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.