Glucose Tolerance Test (GTT). GTT is an abbreviation for Glucose Tolerance Test, which is a measure of the amount of glucose present in the blood stream of a person at the time the test is taken. This test is usually done to check for glucose related problems like hyperglycemia or hypoglycemia in the patient.
Contemporary R&B, also known as simply R&B, is a music genre that combines elements of rhythm and blues, soul, funk, pop, hip hop and dance.
Top definition. rock and roll. A term used to describe the new emergence of rhythm and blues fusion type music in the 1950's. Often the music is referred to simply as rock in modern times. Rock and rolling originally was a term frequently used in predominantly black neighborhoods to mean having sexual intercourse.