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List of 13-letter words containing

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There are 14 thirteen-letter words containing EFR

BIREFRINGENCEbirefringence n. (Physics) The splitting of a ray of light into two parallel rays of perpendicular polarization by passage…
BIREFRINGENCE n. the refraction of light in an anisotropic material (as calcite) in two slightly different directions to form two rays.
DEFRAGMENTERSdefragmenters n. Plural of defragmenter.
DEFRAGMENTINGdefragmenting v. Present participle of defragment.
DEFRAGMENT v. to run a program which reduces or eliminates the fragmentation of (a file or disk) by bringing together parts of files stored in separate locations to a single location on the disk.
DEFRAUDATIONSdefraudations n. Plural of defraudation.
DEFRAUDATION n. the act of defrauding.
IRREFRANGIBLEirrefrangible adj. Not to be broken or transgressed against; inviolable.
irrefrangible adj. (Physics) Incapable of being refracted.
IRREFRANGIBLE adj. that cannot or should not be broken.
IRREFRANGIBLYirrefrangibly adv. In an irrefrangible manner.
IRREFRANGIBLE adv. that cannot or should not be broken.
REFRACTOMETERrefractometer n. (Physics) An optical instrument used to measure the refractive index of a substance.
REFRACTOMETER n. an instrument for measuring the refraction of light.
REFRACTOMETRYrefractometry n. (Physics) the measurement of refractive index.
REFRACTOMETRY n. measurement by refractometer.
REFRIGERATINGrefrigerating v. Present participle of refrigerate.
REFRIGERATE v. to make or keep cold.
REFRIGERATIONrefrigeration n. The process of transferring heat from an object in order to cool it.
refrigeration n. The process of preserving something by cooling.
refrigeration n. (Medicine) The cooling of the body for therapeutic purposes.
REFRIGERATIVErefrigerative adj. Cooling; allaying heat.
refrigerative n. A refrigerant.
REFRIGERATIVE adj. serving to refrigerate.
REFRIGERATORSrefrigerators n. Plural of refrigerator.
REFRIGERATOR n. something that refrigerates.
REFRIGERATORYrefrigeratory n. (Dated) That which refrigerates or cools.
refrigeratory adj. Mitigating heat; cooling.
REFRIGERATORY adj. cooling; refrigerative.
REFRINGENCIESrefringencies n. Plural of refringency.
REFRINGENCY n. refractivity, also REFRINGENCE.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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