order psilophytales is a noun meaning "Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants". It carries one recorded sense.
Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants
Definitions, synonyms and semantic relations for order psilophytales come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.