Plural of alamo, meaning cottonwood trees. Most famous as part of Los Alamos, the site of nuclear weapons development during World War II.
From Spanish 'álamo,' meaning 'poplar' or 'cottonwood tree,' ultimately from Latin 'albus' meaning 'white,' referring to the pale bark. The word entered English through Spanish colonial influence in the American Southwest.
Los Alamos, New Mexico, was literally named after the cottonwood trees that grew there, but these peaceful trees gave their name to the birthplace of nuclear weapons! The irony wasn't lost on scientists who worked there—they often reflected on how a place named for trees became associated with unprecedented destructive power.
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