Definition of Exogen

1. Noun. Flowering plant with two cotyledons; the stem grows by deposit on its outside.




Definition of Exogen

1. n. 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.

Definition of Exogen

1. Noun. (botany) A plant characterized by wood, bark and pith, the wood forming a layer between the other two, and growth only occurring on the outside. ¹

¹ Source: wiktionary.com

Definition of Exogen

1. a type of plant [n -S]

Medical Definition of Exogen

1. A plant belonging to one of the greater part of the vegetable kingdom, and which the plants are characterised 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. Origin: Exo- + -gen: cf. F. Exogene. Source: Websters Dictionary (01 Mar 1998)

Exogen Pictures

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Lexicographical Neighbors of Exogen

exoenergic
exoenthalpic
exoenzyme
exoenzymes
exoergic
exoergic reaction
exoergicity
exoerythrocytic
exoerythrocytic cycle
exoerythrocytic stage
exogamic
exogamies
exogamous
exogastrula
exogen (current term)
exogenetic
exogenic
exogenic toxicosis
exogenism
exogenisms
exogenote
exogenous
exogenous DNA
exogenous creatinine clearance
exogenous cycle
exogenous depression
exogenous fibres
exogenous obesity
exogenous ochronosis

Literary usage of Exogen

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Indiana Weed Book by Willis Stanley Blatchley (1912)
"If it is an endogen and listed, it belongs either under a or aa. If it fits aa go to c, etc. If the weed is an exogen, turn to the "Key to ..."

2. The Indiana Weed Book by Willis Stanley Blatchley (1912)
"If the weed is an exogen, ... f, the epidermis, c, cortex or bark, w, the wood, p, the pith; d, netted veined leaf of exogen with stipules at base. ..."

3. A Class-book of Botany by Alphonso Wood (1851)
"... but as the plant advances in age, it becomes dry, being filled with air only, and much diminished in volume. FIG. 25. — exogen«, — oak, fir ..."

4. History of the Dominion of Canada by William Henry Parr Greswell (1890)
"It was looked upon by the South Africans as an 'exogen,' and the politicians of the day determined that it should not be ..."

5. Applied Chemistry by Edward Andrew Parnell (1844)
"The cross section of a first year's stem of an exogen (lo which class belong almost all trees producing woods employed for mechanical purposes in this ..."

6. Nature Study: One Hundred Lessons about Plants by David Worth Dennis (1903)
"The Growth of Wood in an exogen. Fig. 124. A cross-section of a one-year-old stem. It shows from within out pith, wood crossed by medullary rays and bark. ..."

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