endogen

Definitions

  • WordNet 3.6
    • n endogen a monocotyledonous flowering plant; the stem grows by deposits on its inside
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Webster's Revised Unabridged Dictionary
    • n Endogen (Bot) A plant which increases in size by internal growth and elongation at the summit, having the wood in the form of bundles or threads, irregularly distributed throughout the whole diameter, not forming annual layers, and with no distinct pith. The leaves of the endogens have, usually, parallel veins, their flowers are mostly in three, or some multiple of three, parts, and their embryos have but a single cotyledon, with the first leaves alternate. The endogens constitute one of the great primary classes of plants, and included all palms, true lilies, grasses, rushes, orchids, the banana, pineapple, etc. See Exogen.
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Century Dictionary and Cyclopedia
    • n endogen A plant belonging to one of the large primary classes into which the vegetable kingdom is divided: so named from the belief that the fibrovascular bundles were developed only about the center of the stem, in distinction from the exogens or “outside growers”; a monocotyledon. In their structure the endogens differ from the exogens chiefly in the absence of a cambium layer and in the course of the vascular bundles, which, instead of being parallel to each other in successive concentric rings, have a variously oblique or curved direction, crossing each other, and forming a stem which has ordinarily no distinction of pith or bark, and in cross-section shows the bundles irregularly disposed, either scattered over the whole surface or gathered more compactly toward the circumference. The other organs of the plants are also characteristic. The leaves are generally parallel-veined, the flowers usually have three organs in each whorl, the seed has an embryo with one cotyledon, and the radicle issues from a sheath and is never developed into a tap-root in germination. The endogens are divided into 34 natural orders, including about 1,500 genera and from 18,000 to 20,000 species. By the characters of the inflorescence they are also distinguished as either spadiceous, as in the Palmæ and Araceæ, petaloideous, as in the Orchidaceæ, Liliaceæ, Iridaceæ, and Amaryllidaceæ, or glumaceous, as in the Gramineæ and Cyperaceæ. These 8 orders embrace over four fifths of the whole number of species, the Orchidaceæ alone including nearly 5,000. This class contains many of the most valuable food-producing plants of the vegetable kingdom, such as the cereals and forage-plants among the grasses, the palms, plantains, etc.; and the petaloideous division supplies also very many of the most showy ornaments of the garden and greenhouse.
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Chambers's Twentieth Century Dictionary
    • n Endogen en′do-jen a plant that grows from within, or by additions to the inside of the stem, as the palm, grasses, &c
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Etymology

Webster's Revised Unabridged Dictionary
Endo-, + -gen,: cf. F. endogène,
Chambers's Twentieth Century Dictionary
Gr. endon, within, and genēs, born.

Usage

In literature:

The botanical classifications based upon morphology are so frequently Saponin is found in endogens and exogens.
"Scientific American Supplement, No. 623, December 10, 1887" by Various
Certain it is that if Federation is to be brought about, the movement must be endogenous.
"Town Life in Australia" by R. E. N. (Richard) Twopeny
Budding, so far as known, is endogenous.
"Marine Protozoa from Woods Hole" by Gary N. Calkins
Foot-ball produces what may be called the endogenous or ingrowing toenail, stringhalt and mania.
"The Wit and Humor of America, Volume VII. (of X.)" by Various
He held, however, that the nuclei multiplied endogenously and not by division.
"Form and Function" by E. S. (Edward Stuart) Russell
It is an endogenous plant, the stem of which is enclosed in layers of half-round petioles.
"The Philippine Islands" by John Foreman
B. Endogenous spores of the hay bacillus.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2" by Various
Stem with endogenous plan of growth.
"The Elements of Botany" by Asa Gray
DRACAE'NA, a genus of endogenous evergreen plants, nat.
"The New Gresham Encyclopedia" by Various
ENDOGENOUS PLANTS, old name for monocotyledons (q.v.).
"The New Gresham Encyclopedia" by Various
Opposed to endogenous structures.
"The New Gresham Encyclopedia" by Various
There seem to be a few Endogens, but no true Exogens.
"The Chain of Life in Geological Time" by Sir J. William Dawson
We have in the botanical world the exogenous and the endogenous tree.
"The Palm Tree Blessing" by W. E. Shepard
The liberated merozoites proceed to infect fresh blood corpuscles and a new endogenous cycle is started.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7" by Various
MONOCOTYLEDONOUS OR ENDOGENOUS PLANTS.
"The Manual of the Botany of the Northern United States" by Asa Gray
Man is that noble endogenous plant which grows, like the palm, from within outward.
"The Oxford Book of American Essays" by Various
The minimum protein requirements depend on endogenous nitrogen loss.
"Significant Achievements in Space Bioscience 1958-1964" by National Aeronautics and Space Administration
Is it exogenous or endogenous?
"Scurvy Past and Present" by Alfred Fabian Hess
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In news:

The book covers many of the neurochemical entities that are currently under investigation, including: neuropeptides, leptin, insulin, monoamines and endogenous cannabinoids in relation to appetite and body-weight control.
Often, the source of infection is endogenous.
Understanding the function of endogenous hormones and putting them to good use to treat diseases has been one of the great accomplishments of modern medicine.
Kinases have been the target of extensive research, and there has been significant interest in developing assays that measure the endogenous activities of kinases and their perturbation by small molecules.
Pictures of endogenous drugs make surprisingly nice jewelry.
Many human endogenous retrovirus K (HERV-K) proviruses are unique to humans.
Ethnic differences in skin physiology and pathophysiology exist, and so whether ethnicity is, in fact, an endogenous factor affecting ICD is a relevant question, with clinical and practical consequences.
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In science:

The concentration of apparent endogenous ethano l. // Quart. J.
Influence of Alcohol Smell and Imagination on the Condition of the Human Organism and Subjective Human Experience
Xi , W ∗ i ) does not depend on W ∗ i ), the data generating process is consistent with forms of endogenous censoring that do not satisfy this assumption.
Asymptotically Exact Inference in Conditional Moment Inequality Models
The test framework allows for linear and nonlinear models with endogenous regressors that have autoregressive unit roots or near unit roots.
A specification test for nonlinear nonstationary models
Wang and Phillips (2009b) allowed for endogeneity in their nonparametric structure, so the equation error could be serially dependent and cross-correlated with xt for |t − s| ≤ m0 for some finite m0 .
A specification test for nonlinear nonstationary models
Assumption 2, which allows for endogenity in the regressor xt .
A specification test for nonlinear nonstationary models
Table 1 shows the actual size of the test for various n and bandwidth choices h and for both exogenous (r = 0) and endogenous (r = ±0.5) regressor cases with serially uncorrelated errors (λ = 0).
A specification test for nonlinear nonstationary models
On the other hand, endogeneity at the correlation level r = ±0.5 appears to have little effect on performance, which mirrors results for estimation in the nonlinear nonstationary case [Wang and Phillips (2009b)].
A specification test for nonlinear nonstationary models
Again, there is little difference between the exogenous and endogenous cases, so only the endogenous case is reported here.
A specification test for nonlinear nonstationary models
Overall, the finite sample results reflect the asymptotic theory and seem reasonable for practical use in testing when there is some endogeneity in nonparametric nonstationary regression, especially if smaller bandwidth choices than usual are employed.
A specification test for nonlinear nonstationary models
Endogenous Binary Probit (EBP) model characterized by nonrandom selection.
Spatial Discrete Choice and Spatial Limited Dependent Variable Models: a review with an emphasis on the use in Regional Health Economics
Munkin, M.K. and Trivedi, P.K. (2008) Bayesian analysis of the ordered probit model with endogenous selection, Journal of Econometrics, 143, 334–348.
Spatial Discrete Choice and Spatial Limited Dependent Variable Models: a review with an emphasis on the use in Regional Health Economics
Windmeijer, F.A.G. and Santos-Silva, J.M.C. (1997) Endogeneity in count data models: an application to demand for Health care, Journal of Applied Econometrics, 12, 281-294.
Spatial Discrete Choice and Spatial Limited Dependent Variable Models: a review with an emphasis on the use in Regional Health Economics
The returns for any agent is determined by its production with endogenous technical progress-through the mechanism of learning by doing, and its cooperation with other agents.
Division of Labor as the Result of Phase Transition
From the classical economic theory, the division of labor comes from the development of endogenous comparative advantages.
Division of Labor as the Result of Phase Transition
At the steady state, the attractor consists of hoppings among all vertices of a hyperpolygon enclosing the origin in the phase space, analogous to the present endogenous case, in which a fraction of hyperpolygon vertices belong to the attractor.
Dynamical Mechanisms in Multi-agent Systems: Minority Games
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