plan
— Verb
– English
～ make plans for something; "He is planning a trip with his family"
planar
— Adjective
– English
～ involving or having two dimensions
planaria
— Noun
– English
～ free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
planarian
— Noun
– English
～ free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
planate
— Adjective
– English
～ having been flattened
planation
— Noun
– English
～ the process of erosion whereby a level surface is produced
planchet
— Noun
– English
～ a flat metal disk ready for stamping as a coin
planchette
— Noun
– English
～ a triangular board supported on casters; when lightly touched with the fingertips it is supposed to spell out supernatural (or unconscious) messages
Planck
— Noun
– English
～ German physicist whose explanation of blackbody radiation in the context of quantized energy emissions initiated quantum theory (1858-1947)
Planck's law
— Noun
– English
～ (physics) the basis of quantum theory; the energy of electromagnetic waves is contained in indivisible quanta that have to be radiated or absorbed as a whole; the magnitude is proportional to frequency where the constant of proportionality is given by Planck's constant
Planck's constant
— Noun
– English
～ the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
plane
— Noun
– English
～ an aircraft that has a fixed wing and is powered by propellers or jets; "the flight was delayed due to trouble with the airplane"
plane
— Noun
– English
～ (mathematics) an unbounded two-dimensional shape; "we will refer to the plane of the graph as the X-Y plane"; "any line joining two points on a plane lies wholly on that plane"
plane geometry
— Noun
– English
～ the geometry of 2-dimensional figures
plane
— Noun
– English
～ a power tool for smoothing or shaping wood
plane figure
— Noun
– English
～ a two-dimensional shape
plane
— Noun
– English
～ a carpenter's hand tool with an adjustable blade for smoothing or shaping wood; "the cabinetmaker used a plane for the finish work"
plane
— Noun
– English
～ a level of existence or development; "he lived on a worldly plane"
plane angle
— Noun
– English
～ an angle formed by two straight lines (in the same plane)
picture plane
— Noun
– English
～ the plane that is in the foreground of a drawing or painting; coextensive with but different from the objective surface of the work