The word anatomy comes from the Greek ana-meaning up or through + tome meaning a cutting. Anatomy was once a cutting up because the structure of the body was originally learned through dissecting it. The word histology came from the Greek histo- meaning tissue + logos, treatise.
Definition: Reliability is the degree to which a measurement instrument gives the same results each time that it is used, assuming that the underlying thing being measured does not change.
Reliability is the degree to which tests scores. are consistent, dependable, and repeatable. The greater the error of the test, the lower. the reliability. Validity. Validity is the degree to which a test or. measurement accurately measures or. reflects what it purports to measure.