1. Heat-loving; applied esp. to certain bacteria

Encyclopedia: Thermophilic

• upper jaw
• upper jawbone
• upper limit
• upper mantle
• Upper Paleolithic
• Upper Peninsula
• upper respiratory infection
• upper respiratory tract
• upper side
• upper surface
• Upper Tunguska
• Upper Volta
• upper-case letter
• upper-class
• upper-level
• upper-lower-class
• upper-middle-class
• Upper-Normandy
• uppercase
• uppercut
• uppermost
• uppish
• uppishly
• uppishness
• uppity