alphabetize

• alphabetise (mainly British)

From alphabet(ical) +‎ -ize.

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alphabetize (third-person singular simple present alphabetizes, present participle alphabetizing, simple past and past participle alphabetized)

1. (US, Canada, transitive) To arrange words or items in order of the first (and then subsequent) letters as they occur in the alphabet.

   It was almost impossible to locate specific books in the library until we had alphabetized them by the authors' surnames.