coaxal
coaxial
concentrical
parallel
concentricity
annular
circular
concave
conical
diagonal
elliptical
hemispherical
innermost
irregular
longitudinal
outer
outermost
perpendicular
semicircular
sinuous
spherical
symmetrical
v-shaped
wavy
well-defined
Afrocentric
anthropocentric
eccentric
egocentric
ethnocentric
geocentric