- round
- shape
- diameter
- radius
- loop
- circumference
- orb
- sphere
- triangle
- ellipse
- angle
- travel
- point
- disk
- oval
- encircle
- distance
- roundabout
- traffic circle
- arc
- rotary
- lap
- line
- circuit
- coterie
- semicircle
- epicycle
- pi
- form
- circlet
- go
- move
- locomote
- corner
- crescent
- circumambulate
- inner circle
- circumnavigate
- set
- around
- lot
- band
- dress circle
- ring
- roach
- circumcircle
- greek language
- compass
- parabola
- conic section
- troll
- hypocycloid
- calculus of variations
- orbit
- circles
- central angle
- shaped
- surround
- corners
- spherical
- rope
- pythagorean theorem
- roofy
- rophy
- plane
- r-2
- circular
- centre
- curve
- 2d
- interior
- annular
- roundness
- circularly
- roundish
- roundly
- domed
- rotund
- disc
- seating
- locomotion
- confederacy
- theatre
- cohort
- clique
- pack
- party
- theater
- route
- camp
- junction
- road
- company
- revolve
- equator
- conspiracy
- seats
- house
- pineal
- focus
- ellipsoid
- orbicular
- uncircled
- eccentricity
- semicircular
- circler
- circlelike
- cycloidal
- metathesis
- roundure
- roundrect
- circularity
- armillary
- cylindrical
- circus
- parabolic
- bulbous
- tondo
- circumradius
- terete
- semirounded
- wheel
- paraboloidal
- ringlike
- roundedness
- rundle
- inradius
- hyperboloidal
- gear
- discoid
- flunitrazepan
- midround
- ingroup
- rohypnol
- unround
- allantoid
- astronomy
- roundel
- obround
- disciform
- mexican valium
- science
- hyperbola
- forget me drug
- geometry
- afro
- nonround
- nutlike
- encirclet
- umbrellalike
- circularize
- squircle
- olivelike
- geometric
- aspheric
- plumlike
- rung
- bulblike
- cycloid
- globiferous
- circinate
- maxicircle
- capitate
- rotundifolious
- parallel
- edge
- auriform
- globy
- narrow
- along
- umgang
- front
- globular
- archimedes
- outer
- postround
- inner
- gate
- annulus
- into
- cyclo
- euclidean geometry
- sphery
- across
- through
- circlip
- inexact
- spheroid
- epicycloid
- wide
- main
- crosses
- opposite
- triquetra
- toroidal
- direction
- miscalculation
- the
- forming
- onto
- geometric shape
- mirror
- inside
- cross
- gyro
- long
- lines
- above
- apart
- deep
- convex
- beneath
- atop
- ronde
- standing
- walk
- turning
- stretching
- round shape
- behind
- each
- circumscribe
- cincture
- floor
- axis
- beyond
- golden
- visible
- heads
- right
- separates
- underneath
- divide
- middle
- one
- angles
- where
- entrance
- sits
- sphericity
- length
- separating
- path
- torus
- view
- fringe
- bottom
- within
- toward
- small
- moving
- holds
- connected
- lined
- upper
- walking
- turn
- forth
- outside
- wall
- field
- between
- dartboard
- vertical
- entire
- piece
- bridge
- turns
- spherically
- portion
- span
- space
- holding
- lie
- crossed
- part
- place
- clockwise
- 360 degree
- large
- pear shape
- clypeate
- barcode
- toroid
- glomerous
- timer
- ballow
- radiused
- equation
- circumambulation
- roundeye
- corral
- orthoradial
- circline
- geometrical
- superellipse
- horsey set
- subacute
- jet set
- horsy set
- lap of honour
- car pool
- circle of curvature
- victory lap
- pace lap
- osculating circle
- circle around
- seating room
- walk around
- rotating mechanism
- seating area
- revolve around
- four hundred
- circle round
- rectangle
- social group
- moonlike
- arachnoid
- looping
- round down
- bocca
- roundarm
- horseshoe
- habitude
- crease
- demicircle
- straightaway
- trochoid
- semiannular
- stottie
- crenature
- dot
- counterclockwise
- go round
- diagonal
- round vowel
- spheroconic
- rundel
- saucer
- conglobate
- streaking
- tacnode
- roundsman
- lane
- roundheaded
- globoid
- bullnose
- pyrte
- complex plane
- deke
- circular arc
- spherograph
- perrl
- homeric greek
- twine
- headstamp
- orbiform
- rod shape
- buxom
- cuebid
- wraparound
- swivels
- rounce
- holmos
- crewneck
- steradian
- round angle
- browspot
- quilled
- carom
- fourball
- radical plane
- deflection
- backhand
- slot
- cage
- gloved
- circus ring
- cocoon
- letter
- astrology and astronomy
- puck
- round trip
- some room
- egg shape
- teardrop
- slapshot
- lofting
- slapper
- zone
- wrister
- lob
- backhander
- granny square
- environ
- circulate
- curbstone
- trapezoid
- sideboards
- umbra
- lamplighter
- wing
- vortex
- hexagram
- stick
- rows
- throng
- poke
- peals
- hoop
- hexagon
- stalk
- dimple
- outwards
- snowfield
- net
- ball shape
- irrational number
- round off
- fraction
- rotate mechanism
- mathematical constant
- pair of compass
- some table
- deked
- planet earth
- measurement of a circle
- figure eight
- break wheel
- round shoot
- area of a disk
- round out
- spherical angle
- make hand
- area
- look round
- isoperimetric inequality
- pope joan
- right angle
- round up
- cartesian coordinate system
- goalpost
- our world
- twiddle one's thumb
- hashmark
- coordinate system
- longways
- crosspiece
- slingshotting
- knuckler
- backbend
- dangler
- headpin
- jibber
- star polygon
- spherical geometry
- cheese roll
- major axis
- under gun
- bow compass
- compact disc
- trigonometry
- parametric equation
- close curve
- trigonometric function
- ballet flat
- midpoint
- parametric variable
- calculus
- stereographic projection
- homogeneous coordinates
- tangent half-angle substitution
- complex projective plane
- tangent
- polynomial
- vertex
- cross-ratio
- series
- polar coordinates
- circular points at infinity
- tangent line
- generalised circle
- equilateral triangle
- implicit differentiation
- counterclockwise rotation
- celestial sphere
- inscribed angle
- acute angle
- conga line
- geometers
- slap shot
- compass-and-straightedge construction
- angle bisector theorem
- apollonius of perga
- exterior angle
- interior angle
- incircle and excircles of a triangle
- unit circle
- compass and straightedge
- lindemannāweierstrass theorem

That's about all the circle related words we've got! I hope this list of circle 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 circle, 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! š·