- radius
- circle
- circumference
- size
- spherical
- geometry
- length
- ellipse
- thickness
- cylindrical
- inch
- width
- centimeter
- circular
- millimeter
- micrometers
- microns
- diam
- cm
- nanometers
- caliber
- bore
- sphere
- calibre
- micrometres
- mm
- internodes
- chord
- major axis
- ellipsoid
- sized
- conic
- torus
- toroidal
- diameters
- toroid
- eccentricity
- conic section
- centimeters
- μm
- lengths
- sizes
- conical
- euclidean space
- radial
- inches
- millimeters
- oblong
- aperture
- rectangular
- windage
- cubic
- gauge
- r
- horizontal
- thicknesses
- protruding
- coils
- curvature
- tubes
- perforations
- lengthwise
- rotor
- curved
- nozzles
- shaped
- horizontally
- velocities
- cone
- wingspan
- height
- vertical
- centimetres
- surface
- empty set
- beam
- meter
- feet
- cylinder
- elongated
- angular
- spaced
- above
- thick
- vertically
- measuring
- metres
- meters
- centimetre
- rectangle
- millimetres
- tall
- beams
- ft
- hypercube
- cylinders
- trunk
- measured
- shaft
- tail
- thicker
- metre
- below
- blade
- scales
- layer
- cones
- elliptical
- surfaces
- velocity
- dia
- micrometer
- elevation
- frame
- dots
- turret
- thin
- weighs
- dimensions
- angle
- subset
- nm
- mesh
- larger
- wavelength
- crater
- girth
- tube
- tapering
- line segment
- lattice
- antenna
- frames
- semicircle
- wide
- layers
- geometric
- roughly
- parabola
- hyperbola
- supremum
- acids
- epicycloid
- orthoradial
- hypocycloid
- jet
- cycloid
- obround
- oval
- greek language
- roundness
- straight line
- epicycle
- round
- cross-section
- circlet
- radii
- micrometre
- tetrahedron
- quadrant
- volute
- apertures
- condyle
- umbels
- reamer
- flanges
- protrusion
- mandrel
- pinna
- petiole
- venturi
- caliper
- tokamak
- radula
- corium
- cuboid
- dowel
- lamellae
- lengthways
- racemes
- femora
- ovipositor
- annular
- cubit
- radian
- circularly
- roundabout
- orbicular
- encircle
- cycloidal
- pineal
- geometrical
- roundish
- m
- rotund
- semicircular
- domed
- circumcircle
- cosine
- roundly
- inradius
- circumradius
- around
- convex set
- orb
- uncircled
- circler
- 2-inch
- 4-inch
- lumens
- perimeter
- orbiform
- convex
- parallel lines
- roundel
- circlelike
- circularity
- bulbous
- parabolic
- armillary
- squircle
- roundure
- rundle
- subacute
- roundrect
- convexity
- steradian
- rotating calipers
- spheroid
- tondo
- equator
- annulus
- trochoid
- curve of constant width
- arcsecond
- semirounded
- angstroms
- countersink
- retroreflector
- millionths
- lapilli
- cryostat
- corrugation
- sepal
- microbalance
- collimator
- radome
- widthwise
- sheave
- spheroids
- veinlet
- pentlandite
- frustum
- diaphysis
- acetabulum
- fruitlets
- hyperboloidal
- baseplate
- midround
- paraboloidal
- terete
- codomain
- roundedness
- barcode
- miscalculation
- reuleaux triangle
- globular
- cyclo
- maxicircle
- nonround
- spherograph
- gyro
- globiferous
- unround
- tacnode
- allantoid
- dimensional
- discoid
- rung
- becket
- nutlike
- ringlike
- encirclet
- octant
- spherically
- aspheric
- bocca
- loop
- circumnavigate
- disciform
- sphericity
- umgang
- magnetosphere
- circularize
- umbrellalike
- smoothbore
- triquetra
- plumlike
- globy
- olivelike
- sphery
- circumambulate
- cincture
- quilled
- bulblike
- rotundifolious
- invariant
- auriform
- circinate
- capitate
- ballow
- conjugate diameters
- demicircle
- arcograph
- radiansphere
- spheroconic
- superellipse
- circlip
- geometric shape
- glomerous
- radiused
- postround
- globoid
- rundel
- roundeye
- symbol
- headstamp
- dartboard
- radical axis
- round shape
- horosphere
- moonlike
- roundarm
- conglobate
- variable
- circline
- gyratory
- stottie
- browspot
- zerogon
- metric space
- arachnoid
- oillet
- clypeate
- rod shape
- semiannular
- 360 degree
- central angle
- distance function
- pear shape
- unicode
- radical line
- round angle
- newtonian telescope
- absorption coefficient
- muzzle velocity
- pencil eraser
- parabolic reflector
- cubic centimeter
- embroidery hoop
- dipole moment
- isosceles triangle
- kinematic viscosity
- convex lens
- refracting telescope
- anal fin
- round down
- star polygon
- radical plane
- circular arc
- real number
- three dimensional
- some table
- traffic circle
- round vowel
- great circle
- macintosh
- granny square
- spherical geometry
- homoglyph
- negative infinity
- go round
- round shoot
- two dimensional
- pair of compass
- typeface
- figure eight
- twiddle one's thumb
- planet earth
- circus ring
- o
- latex
- spherical angle
- phi
- ball shape
- egg shape
- rotate mechanism
- convex hull
- some room
- differential geometry
- our world
- make hand
- method of indivisibles
- riemannian geometry
- geometric figure
- under gun
- 0
- axis of symmetry
- apple, inc.
- miscellaneous technical
- compose key
- italic script
- inch diameter
- microsoft word
- #.#cm
- #/#-inch
- 5mm
- mm thick
- #.#mm
- widths
- oval shaped
- inch thick
- cone shaped
- ##cm
- x ##mm
- hexagonal
- #.##mm
- feet tall
- flange
- #.#in
- ####mm
- ###mm
- axial
- particle size
- tubular
- cavity
- spindle
- filament
- protrude
- reflector
- concave
- nozzle
- filaments
- mm x
- ##mm
- machined
- lobes
- perpendicular
- distal
- ##in
- actuator
- proximal
- ##.#mm
- extruded
- coil
- perforated
- micron
- transducer
- fibrous
- stainless steel
- indentation
- slits
- orifice
- repeatability
- spacing
- perforation

That's about all the diameter related words we've got! I hope this list of diameter terms was useful to you in some way or another. The words down here at the bottom of the list will be in some way associated with diameter, but perhaps tenuously (if you've currenly got it sorted by relevance, that is). If you have any feedback for the site, please post it here, but please note this is only a hobby project, so I may not be able to make regular updates to the site. Have a nice day! 🐮