1. Aquatic plant with deep green foliage useful to oxygenate an aquarium; sometimes placed in genus Egeria
   - dense-leaved elodea, Egeria densa

Type of: waterweed

• hierarchic
• hierarchical
• hierarchical classification system
• hierarchical data structure
• hierarchical menu
• hierarchical structure
• hierarchically
• hierarchy
• hieratic
• hieratic script
• hieratical
• hiero-
• hierocracy
• hieroglyph
• hieroglyphic
• hieroglyphical
• hieroglyphically
• hierogram
• hierolatry
• Hieronymus
• Hieronymus Bosch
• hierophant
• hifalutin
• Higginson
• higgle