diameter (n.)

• amplitude
• area
• axis
• beeline
• bigness
• body
• bore
• boundary
• breadth
• bulk
• caliber
• center
• chord
• core
• coverage
• depth
• diagonal
• diaphragm
• dimension
• divider
• edge
• equator
• expanse
• expansion
• extension
• extent
• gauge
• girth
• greatness
• heart
• height
• interior
• kernel
• largeness
• length
• magnitude
• mass
• mean
• measure
• measurement
• median
• middle
• midriff
• midst
• normal
• nucleus
• partition
• perpendicular
• proportion
• proportions
• radius
• range
• reach
• scale
• scope
• secant
• segment
• semidiameter
• shortcut
• side
• size
• spread
• straight
• straightaway
• tangent
• thick
• vector
• volume
• waist
• waistline
• width
• zone