1. Of a group or set having no members

Antonym: membered

• tetranychid
• Tetranychidae
• Tetrao
• Tetrao urogallus
• Tetraodontidae
• Tetraonidae
• tetrapod
• Tetrapturus
• tetrarch
• tetrarchy
• tetrasaccharide
• tetraskele
• tetraskelion
• tetrasodium pyrophosphate
• tetrasporangium
• tetraspore
• tetrastich
• tetravalent
• Tetrazzini
• tetri
• tetrode
• tetrodotoxin
• tetrose
• tetroxide
• tetryl