an instance of altering or changing the reality of something. Isness means the way it is. When someone sees it differently, he is doing an alter-is; in other words, is altering the way it is. For more information, see the ScientologyAxioms in the book Scientology 0-8: The Book of Basics by L. Ron Hubbard. —Freedom Congress Glossary (Final approval 5-9-90)