Ypresian

//iːˈpɹɛz.i.ən// adj, name

adj, name ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Of or pertaining to a geological epoch, the oldest age or lowest stratigraphic stage of the Eocene. not-comparable
Proper Noun
  1. 1
    A subdivision of the Eocene epoch

Etymology

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

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.