Definition of exogenous in English:



  • 1Relating to or developing from external factors.

    Often contrasted with endogenous
    • ‘The only things that have changed since the start of the peace process have been, as it were, exogenous variables.’
    • ‘‘These could be treated as exogenous but this might be misleading’.’
    • ‘Consider that most recessions are the result of exogenous shocks: the oil crisis of 1973, the credit controls of 1980, and, of course, the war.’
    • ‘This is an important claim because it challenges conventional wisdom that the oil shocks were driven by exogenous political events in the Middle East.’
    • ‘However, the building of excess capacity is not inevitable and is not driven by exogenous factors, such as external control of markets.’
    • ‘This theory stipulates that people are motivated by calculations of abstract utility in a cost-benefit framework, informed by exogenous tastes and preferences.’
    • ‘Rational choice theory views actors as rational insofar as they act instrumentally, are utility maximizers, possess stable and exogenous preferences, and are self-interested.’
    • ‘Citizens found themselves squeezed to suffocation in one way or another between domestic repression and exogenous vilification.’
    • ‘He said that while there are a few indigenous reasons like genes, heredity etc for obesity, there are more exogenous reasons for the problem.’
    • ‘External or exogenous factors were a threat to the monetary stability achieved in 1999.’
    • ‘What we don't find is any sense in which religion is an exogenous variable, an autonomous force that floats above the social landscape and mysteriously bends the minds of men to its will.’
    • ‘Before 1815, depressions were caused primarily by exogenous shocks, that is, by forces external to the economy such as wars, widespread crop failures, or other disasters.’
    • ‘Also, the country remains vulnerable to exogenous shocks.’
    • ‘In modern times, all significant bouts of inflation have been generated by a war or exogenous oil price shocks, not by a peacetime economy that expanded beyond its sustainable limits.’
    • ‘On many issues, Latin Americans continue to be highly vulnerable to exogenous events, trends and decisions.’
    • ‘Other tastes, not necessarily exogenous, often superceded the desire for financial gain.’
    • ‘They are supposed to move like a pendulum: they may be dislocated by external forces, so-called exogenous shocks, but they will seek to return to the equilibrium position.’
    • ‘In stabilizing broad measures of economic volatility, it serves to decrease exogenous risk in the markets and the economy.’
    • ‘Once again, it is endogenous, not exogenous factors that make or break a relationship.’
    • ‘As predicted, many get there because of so-called exogenous shocks: a major media announcement, a celebrity endorsement, a dignitary's death.’
    1. 1.1Biology Growing or originating from outside an organism.
      ‘an exogenous hormone’
      • ‘Transgenesis refers to the process of introducing exogenous genes into the germ line of an organism.’
      • ‘Nesting female scoters rely on nutrient reserves stored before nesting for completion of incubation, but rely on exogenous nutrients for egg formation.’
      • ‘Furthermore, laboratory studies of the uptake of exogenous chromosomal DNA in bacteria have also demonstrated that recombination can mediate the process of adaptive evolution.’
      • ‘The latter may be formed endogenously from cellular precursors, but they may also originate from exogenous sources such as diet, tobacco smoke or environmental pollution.’
      • ‘Little is known about the relative importance of glycogen versus exogenous glucose for contractility of cardiac tissue in trout.’
    2. 1.2 (of a disease, symptom, etc.) caused by an agent or organism outside the body.
      ‘exogenous depression’
      • ‘Doctors generally avoid prescribing hormone replacement therapy to postmenopausal women with systemic lupus erythematosus because of a widespread belief that exogenous oestrogens make the disease worse.’
      • ‘Like addiction, pornography is an ostensibly participatory process which commensurates the organism to exogenous - and arbitrary - stimuli.’
      • ‘All patients underwent toxicological analysis to exclude the presence of alcohol and other exogenous agents.’
      • ‘A patient history should include attention to exogenous agents that may cause or further aggravate symptoms.’
      • ‘While external climatic factors are the cause of exogenous diseases such as fevers, colds and flus, Ama is the root of more endogenous diseases such as arthritis, heart disease and cancer.’
    3. 1.3 Relating to an external group or society.
      ‘exogenous marriage’
      • ‘Two of the papers in this volume refocus syncretism away from issues of authenticity and inauthenticity to argue for an integration and synchronisation of indigenous and exogenous elements.’
      • ‘It can be loosely defined as a hybrid of exogenous and indigenous languages.’
      • ‘Yet such a strategy does not signify polar opposition between tradition and modernity, endogenous and exogenous.’
      • ‘The linkages perspective considers both the exogenous pressures toward change and the internal dynamic of local cultures.’


Mid 19th century: from modern Latin exogena (denoting an exogenous plant, suggested by classical Latin indigena ‘native’) + -ous.