circularize

From circular +‎ -ize.

circularize (third-person singular simple present circularizes, present participle circularizing, simple past and past participle circularized)

1. (intransitive) To publicize something by publishing and distributing circulars.
2. (transitive) To distribute a circular or circulars to.
   • 1926, Ernest Hemingway, The Sun Also Rises, Folio Society, published 2008, page 56:

     Mr and Mrs Aloysius Kirby announce the marriage of their daughter Katherine – I knew neither the girl nor the man she was marrying. They must be circularizing the town.

3. To canvass opinion by using a questionnaire.
4. (transitive) To make (something) circular in shape.