English Dictionary

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autochthonous (ɔːˈtɒkθənəs or autochthonic (ˌɔːtɒkˈθɒnɪk or autochthonal



  1. (of rocks, deposits, etc) found where they and their constituents were formed . Compare allochthonous
  2. inhabiting a place or region from earliest known times; aboriginal
  3. (physiology) (of some functions, such as heartbeat) originating within an organ rather than from external stimulation

Derived Forms

auˈtochthonism, or auˈtochthony  noun
auˈtochthonously  adverb


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