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Tweet abbr. 1. earned run average 2. Equal Rights Amendment |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
n. 1. A period of time as reckoned from a specific date serving as the basis of its chronological system. 2. A period of time characterized by particular circumstances, events, or personages: the Colonial era of US history; the Reagan era. 3. The longest division of geologic time, made up of one or more periods. [Late Latin aera, from Latin, counters, pl. of aes, aer-, bronze coin; see ayes- in the Appendix of Indo-European roots.] |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
