1. Having only one axis; developing along a single line or plane 
2. Having but one optic axis, or line of no double refraction

Encyclopedia: Uniaxial

• time to come
• time trial
• time unit
• time value
• time warp
• time will tell
• time zone
• time-and-motion study
• time-ball
• time-consuming
• time-delay measuring instrument
• time-delay measuring system
• time-fuse
• time-honored
• time-honoured
• time-lapse
• time-motion study
• time-out
• time-release
• time-scale factor
• time-switch
• time-tested
• timecard
• timed
• timekeeper