noun
lower tracheophytes in existence since the Devonian
• Syn: ↑Equisetales
• Hypernyms: ↑plant order
• Member Holonyms: ↑Sphenopsida, ↑class Sphenopsida, ↑Equisetatae, ↑class Equisetatae
• Member Meronyms: ↑Equisetaceae, ↑family Equisetaceae, ↑horsetail family
Useful english dictionary. 2012.