1. Concave on both sides
   - biconcave

See also: concave

• viverrine
• viverrine mammal
• vivers
• vivid
• vividity
• vividly
• vividness
• Vivien Leigh
• vivification
• vivify
• viviparity
• viviparous
• viviparous eelpout
• vivisect
• vivisection
• vivisectional
• ragwort
• rah
• rah-rah
• Rahu
• raid
• raider
• raiding
• rail
• rail fence