• synonyms

earned run average

noun Baseball.

a measure of the effectiveness of a pitcher, obtained by dividing the number of earned runs scored against the pitcher by the number of innings pitched and multiplying the result by nine. A pitcher yielding three earned runs in nine innings has an earned run average of 3.00. Abbreviation: ERA, era


What’s The Difference: Average, Mean, Median, And ModeAs you probably know the terms average, mean, median, and mode are commonly confused with one another because they all describe ways to talk about sets of numbers.

Nearby words

earn one's keep, earn one's stripes, earn, loch, earned income, earned run, earned run average, earned surplus, earner, earnest, earnest money, earnestly

Origin of earned run average

First recorded in 1945–50 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019