laevorotatory or levorotatory /lē-vō-rōˈtə-tə-ri or -rō-tāˈ/

1. Counter-clockwise
2. Rotating the plane of polarization of light to the left (optics)

laevorotāˈtion noun

• tower blocks
• tower captain
• towered
• towerier
• toweriest
• towering
• toweringly
• towerless
• tower mill
• tower of strength
• tower over
• towers
• tower-shell
• tower-shells
• towery
• tow-head
• tow-headed
• tow-heads
• towhee
• towhees
• towier
• towiest
• towing
• towing-bitts
• towing net