quantity, amount, measure - how much there is of something that you can quantify

temperature - the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)

mass - the property of a body that causes it to have weight in a gravitational field

length - the linear extent in space from one end to the other; the longest horizontal dimension of something that is fixed in place; "the length of the table was 5 feet"

period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"