Ypresian

Pronunciation

Origin

From the French ypresien, from Ypres + -ien; equivalent to Ypres + -ian; compare yperite.

Full definition of Ypresian

Proper noun

1. (geology, paleontology) A subdivision of the Eocene epoch

Adjective

1. (geology) Of or pertaining to a geological epoch, the oldest age or lowest stratigraphic stage of the Eocene.