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Due to an external cause; not arising within the organism.
Growing by addition to the outer surfaces.
Pertaining to those factors in the metabolism of nitrogenous substances obtained from food.



in botany, a term referring to the development of lateral organs in the peripheral cell layers of the main axis of a particular plant organ. Examples of exogenous organs are the leaves that develop in the form of external nodes on the growing point of shoots, root hairs (which are lateral growths of root integuments), and some epidermal growths (trichotomes) of a plant’s aboveground organs.

References in periodicals archive ?
The first term is the total number of workers employed in the previous period that continued with the same idiosyncratic productivity level during the current period and that either were not exogenously relocated to the leisure island or, if they were, were able to come back to the production island within the same period.
which means that [SIGMA] is determined by the variance of the exogenous shock ([OMEGA]) and the exogenously given capacity ([kappa]).
S moves endogenously to allow (Al) to be satisfied with L moving along its exogenously imposed no-policy recovery path.
Further, Levine (1998) argued that legal origin exogenously determined the degree of financial development that promoted economic growth.
The level of government expenditure is exogenously specified as 20 percent of output.
Contractile responses to all three exogenously administered agonists were attenuated following incubation of isolated rat prostates with red clover extract compared to vehicle controls (182 mg/ml, P < 0.
In summary, exogenously administered NE retains its antidiuretic/antinatriuretic action following acute removal of renal sympathetic nerve action.
7) A (>0) and [alpha] (0 < [alpha] < 1) are parameters for the exogenously given technology and capital income share.
Three features of the economic environment were determined exogenously because the processes needed to generate them are too complex to incorporate into the simulation program.
The high educated workers in complex occupations in period t + 1 are comprised of those who are not exogenously separated in period t according to the separation rate from complex occupations [x.
However, there is no need to retain output as a separate explanatory variable for capital within an aggregate context; exogenously determined labour supply enables derivation of a solution for the optimal capital stock as a function solely of variables exogenous to the domestic economy.
Conditional sufficiency would seem to require an exogenously determined trend of population size.