planiform

[pley-nuh-fawrm, plan-uh-] /ˈpleɪ nəˌfɔrm, ˈplæn ə-/

adjective

having a flattened shape, as an anatomical joint.

Origin of planiform

1820-1830

First recorded in 1820-30; plani- + -form

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Based on the Random House Dictionary, © Random House, Inc. 2017.
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