biconvex /bī-konˈveks/

Convex on both sides

• headhunting
• headhuntings
• headhunts
• headier
• headiest
• headily
• headiness
• headinesses
• heading
• headings
• headlamp
• headlamps
• headland
• headlands
• headlease
• headleases
• headless
• headlight
• headlights
• headline
• headlined
• headliner
• headliners
• headlines
• headlining