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

• transpirate
• transpiration
• transpire
• transpiring
• transplacental
• transplant
• transplantable
• transplantation
• transplanter
• transplanting
• transpolar
• transponder
• transport
• transport ship
• transportable
• transportation
• transportation company
• Transportation Secretary
• Transportation Security Administration
• transportation system
• transporter
• transposability
• transposable
• transpose
• transposed