1. The change in the direction of a ray of light or heat as it passes through a smooth surface into a medium of a different density. Double refraction, the refracting of light in two directions. Astronomical refraction, the apparent angular elevation of the celestial bodies above their true places, due to the refracting power of the air. Angle of refraction, the angle made by a ray of light and a line perpendicular to the surface of the medium through which it is passing.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• resriction,
• defraction,
• reraction,
• reproction,
• refaction,
• refractions,
• deffraction,
• difraction,
• refuction,
• refration,
• reflction,
• refkection,
• recreaction,
• resuraction,
• refliction,
• reforamtion,
• reflaction,
• recrection,
• retractiona,
• refrection

• refractometer,
• refractory,
• repression,
• refractivity,
• refractive,
• refractile,
• refrigeration,
• refracture,
• refract.

The adjective form of the word "refraction" is "refractive".

The plural of the "refraction" can be the "refractions".

The singular of the "refraction" can be the "refraction".