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refined no longer containing impurities or extraneous substances. [4 definitions]
refinement the act of refining or condition of being refined. [3 definitions]
refinery an industrial plant where natural resources such as petroleum and sugar are purified into usable products.
refinish to redo or restore the surface or finish of (woodwork, furniture, or the like).
refire combined form of fire.
refit to make or be made fit or ready for use again; resupply; reequip. [2 definitions]
refix combined form of fix.
reflect to throw back (light, heat, sound, or the like), as from a surface. [7 definitions]
reflectance the ratio of the amount of radiation, esp. light, that is reflected from a surface to that of the radiation originally on the surface.
reflecting telescope an optical telescope that uses mirrors rather than lenses to focus light rays. (Cf. refracting telescope.)
reflection the act of reflecting or state of being reflected. [4 definitions]
reflective created by or resulting from reflection. [2 definitions]
reflector a surface that throws back heat, light, or sound. [2 definitions]
reflex denoting or pertaining to an involuntary physiological response or reaction to a stimulus. [7 definitions]
reflex camera a camera fitted with a mirror behind the lens which reflects the image onto a ground glass plate to achieve an exact focus.
reflexive of a pronoun, used as an object that refers back to the subject of a sentence, as "himself" in "He admired himself in the mirror". [4 definitions]
refloat combined form of float.
refluent flowing back, as in a tide; ebbing.
reflux the process of flowing back.
reforest to plant new trees in (an area formerly forested).
reforestation the act of planting new trees to cover land where a forest had existed previously.