devonian

/D IH0 V OW1 N IY0 AH0 N/
adjective
  1. 1

    (geology) Of a geologic period within the Paleozoic era; comprises lower, middle and upper epochs from about 415 to 360 million years ago.

  2. 2

    (chiefly dated) Of or pertaining to the English region of Devon.

noun
  1. 1

    (geology) The Devonian period.

  2. 2

    (chiefly dated) A native or inhabitant of the English region of Devon.