Definitions

1. noun

A measure of the probability of survival at each point in time, used in the statistical analysis of survival times.

“The doctor explained the Gleason score to help us understand the patient’s prognosis.”

2. noun

A unit of measurement of the hardness of water, equal to the amount that causes a one-grain-per-gallon change in the freezing point of water.

“The water treatment plant used the Gleason scale to measure the hardness of the water supply.”

3. proper noun

A surname of English origin, possibly derived from the Old English words ‘glea’ or ‘gleah’, meaning ‘meadow’ or ‘clearing’.

“Gleason is a common surname in the United States, with various notable individuals bearing the name.”