1. Open; unclench

Derived forms: unclosed, uncloses, unclosing

• spherule
• spherulite
• spherulitic
• sphincter
• sphincter ani
• sphincter muscle
• sphingid
• Sphingidae
• sphingine
• sphinx
• sphinx moth
• sphragistics
• sphygmograph
• sphygmomanometer
• Sphyraena
• Sphyraena barracuda
• Sphyraenidae
• Sphyrapicus
• Sphyrapicus varius
• Sphyrapicus varius ruber
• Sphyrna
• Sphyrna tiburo
• Sphyrna tudes
• Sphyrna zygaena
• Sphyrnidae