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.
In research, the term reliability means repeatability or consistency. A measure is considered reliable if it would give us the same result over and over again (assuming that what we are measuring isn't changing!). Let's explore in more detail what it means to say that a measure is repeatable or consistent.