autochthonous

• Décrit quelque chose qui est local, indigène ou originaire de l'endroit où il se trouve.

Describes something that is native, indigenous, or originating from the place where it is found.

1. Geological originC2formalscientific

   Describes rocks, deposits, or minerals that are found in the same location where they were originally formed.

   Origine géologique

   • The geologist identified the rock formation as autochthonous, meaning it had not been transported.
   • Autochthonous coal deposits are rare and highly valued for study.
   • The sediment layer was autochthonous, formed directly from the underlying bedrock.

   Synonymesin-situindigenousnative

   Antonymesallochthonous

2. Indigenous originC2formalscientific

   Originating or formed in the place where it is found; not transported from elsewhere.

   Originaire du lieu où on le trouve

   • The autochthonous flora of the region evolved in isolation.
   • These autochthonous species are unique to this island.
   • The soil contains autochthonous minerals that reflect the local geology.

   Synonymesaboriginalendemicindigenouslocalnative

   Antonymesadventivealienallochthonousexoticforeignnonnative