Definition of "pyriform" [pyr•i•form]

• Shaped like a pear. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The singular "pyriform appendage" of the heart lies in the left process of the ligament, its anterior edge nearly following the arcuated contour of that process."
• "This temperament is distinguished by a relatively large head and small body, pyriform face, high, wide forehead, and usually sharp features."
• "A large English variety, somewhat irregular in form, but usually more or less compressed, and sometimes pyriform; the upper portion of the root being produced four or five inches above ground."