The International Software Testing Qualifications Board produces a glossary of standard software testing terms. Many of the terms in this glossary are used in the Rational Quality Manager user interface, product documentation, and in software testing generally.
To look up terms, go to http://www.istqb.org/downloads/glossary-current.pdf to open the Standard glossary of terms used in Software Testing, Version 2.0, produced by the Glossary Working Party of the International Software Testing Qualifications Board (ISTQB).