To flatten something is to make it into a thin sheet or sheet of paper. You can flatten a piece of paper by pressing it down with your hand, or by using a machine.

  • The printer was flattening the paper as it was printing.

  • The cloth was being flattened by the machine.

Definition of flattens


become flat or flatter


flatten out


lower the pitch of (musical notes)




make flat or flatter

Nearby Words

flattens Pronunciation in a video

Example Sentences for flattens

  • 1

    The body is elongate and flattened ventrally to the pelvic fins.

  • 2

    The carapace is oval and flattened.

  • 3

    The leaves are connate by flattened petioles.

  • 4

    The nucleus is flattened and located on the periphery.

  • 5

    The simplest fix is to flatten the hierarchy.

  • 6

    The top of the mountain is flattened and domelike.

  • 7

    These are the onsets of muscles that flatten the abdomen.

  • 8

    The forehead is flattened, and the bill is strong and pointed.

  • 9

    The pediment is flattened and the columns are widely spaced.

  • 10

    The carapace is flattened dorsally and highest anterior to the bridge.