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quadricentennial

[ kwod-ruh-sen-ten-ee-uhl ]
/ ˌkwɒd rə sɛnˈtɛn i əl /
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adjective

of, relating to, or marking the completion of a period of four hundred years.

noun

a quadricentennial anniversary.
its celebration.

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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Origin of quadricentennial

First recorded in 1880–85; quadri- + centennial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for quadricentennial

British Dictionary definitions for quadricentennial

quadricentennial
/ (ˌkwɒdrɪsɛnˈtɛnɪəl) /

noun

a 400th anniversary

adjective

of, relating to, or celebrating a 400th anniversary
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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