2. (Geom.) Pertaining to, or having the properties of, an
osculatrix; capable of osculation; as, a circle may be
osculatory with a curve, at a given point.
{Osculatory circle}. (Geom.) See {Osculating circle of a
curve}, under {Circle}.
{Osculatory plane} (to a curve of double curvature), a plane
which passes through three successive points of the curve.
{Osculatory sphere} (to a line of double curvature), a sphere
passing through four consecutive points of the curve.