noun
aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales
• Syn: ↑Isoetales
• Hypernyms: ↑plant order
• Member Holonyms: ↑Lycopsida, ↑class Lycopsida, ↑Lycopodiate, ↑class Lycopodiate
• Member Meronyms: ↑Isoetaceae, ↑family Isoetaceae, ↑quillwort family
Useful english dictionary. 2012.