Anagrams of: RAREFICATIONAL

• relating to or situated at an interface

• a decrease in the density of something

• constituting or comprising a part or fraction of a possible whole or entirety

• constituting a division or an aliquot part of the basic monetary unit

• the change in direction of a propagating wave (light or sound) when passing from one medium to another

• the amount by which a propagating wave is bent

• pertaining to or worked or produced by friction

• related to or involving literary fiction

• formed or conceived by the imagination

• marked by excessive enthusiasm for and intense devotion to a cause or idea

• have sex without being married

• of or relating to factorials

• the product of all the integers up to and including a given integer