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A Writer's Dictionary:

orthogenesis Definition


Dictionary Home » Words Starting with O » ornithological ... oscillating » orthogenesis


orthogenesis
noun
    1. The evolution of organisms systematically in a definite ‘goal-directed' direction and not accidentally in many directions.
    2. Determinate variation.
Derivative: orthogenetic
adj
    Derivative: orthogenetically
    adverb
      Etymology: 19c.



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