Silurian

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Silurian

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From Latin Silurēs +‎ -ian.

• (UK) IPA^(key): /saɪˈlʊəɹ.iː.ən/

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Silurian (comparative more Silurian, superlative most Silurian)

1. (geology) Of a geologic period within the Paleozoic era; comprises the Llandovery, Wenlock, Ludlow and Pridoli epochs from about 439 to 409 million years ago.
   • 1887, R. A. Murray, Victoria. Geology and Physical Geography, page 126:

     In some places, however, quartz reefs, payably auriferous while in Silurian rock, have been followed down to subjacent granite, and have there been found to thin out and become unprofitable […]

2. (archaeology) Of or related to the Silures, a pre-Roman British tribe.

Silurian (plural Silurians)

1. A member of the Silures, an ancient tribe of Britannia.

Silurian

1. (geology) The Silurian period.

• Appendix:Geologic timescale