1. The distance by which one thing clears another; the space between them 
2. Vertical space available to allow easy passage under something
   - headroom, headway 
3. Permission to proceed
   "the plane was given clearance to land"

Derived forms: clearances

See also: clear

Type of: elbow room, interval, licence [Brit, Cdn], license [N. Amer], permission, permit, room, separation, way

Encyclopedia: Clearance

• noncolumned
• noncom
• noncombatant
• noncombinative
• noncombining
• noncombustible
• noncommercial
• noncommissioned
• noncommissioned officer
• noncommittal
• noncommittally
• noncommunicable
• noncompetitive
• noncompetitively
• noncompliance
• noncompliant
• noncomplying
• noncomprehensive
• noncomprehensively
• nonconcentric
• nonconducting
• nonconductive
• nonconductor
• nonconformance
• nonconforming