1. Of or relating to or shaped like a quadrilateral

See also: tetragon

Encyclopedia: Tetragonal

• Helminthostachys
• Helminthostachys zeylanica
• helmsman
• Helmut Heinrich Waldemar Schmidt
• Helmut Schmidt
• Heloderma
• Heloderma horridum
• Heloderma suspectum
• Helodermatidae
• helot
• Helotiaceae
• Helotiales
• helotism
• Helotium
• helotry
• help
• help oneself
• help out
• helpdesk
• helper
• helper cell
• helper T cell
• helpful
• helpfully
• helpfulness