1. Large deeply rooted fern of worldwide distribution with upright bipinnate compound tufted fronds
   - royal fern, royal osmund, king fern, ditch fern, Osmunda regalis

Type of: flowering fern, osmund

• juvenile-onset diabetes
• juvenilia
• juvenility
• juxtapose
• juxtaposed
• juxtaposition
• JV
• Jyaistha
• Jylland
• Jynx
• k
• K particle
• K ration
• K'ung Futzu
• K-Dur 20
• K-lor
• K-lyte
• k-meson
• K.E.
• K2
• Ka
• Kaaba
• kabala
• kabbala
• kabbalah