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Related to pyriform: clavate, piriform, pyriform lobe


Shaped like a pear.

[Medieval Latin pyrum, pear (alteration of Latin pirum; see pear) + -form.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.




(Anatomy) (esp of organs of the body) pear-shaped
[C18: from New Latin pyriformis, from pyri-, erroneously from Latin pirum pear + -formis -form]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɪr əˌfɔrm)

[1695–1705; < New Latin pyriformis=pyri- (for piri-; Latin pir(um) pear + -i- -i-) + -formis -form]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
This canal begins its pathway as a bifurcation of the infraorbital conduit, follows a descending and medial path on the anterior wall of the maxilla to the lateral wall of the pyriform aperture.
Fruit###Sub-globose###depressed-globose###globose or ovoid###oblong, pyriform, obovoid,
The lateral end of the alar batten graft then lies against the pyriform aperture as usual.
Otorhinolaryngologic examination showed a 3.8 cm x 2.5 cm growth right pyriform sinus (PFS), biopsy from which revealed pleomorphic spindle cell tumor with large hyperchromatic nuclei, prominent nucleoli with frequent mitosis with a mitotic rate of 4 per high-power-field arranged in intersecting fascicles.
Vesicles are spherical to sub-spherical, or pyriform to spatulate, 8-15 [micro]m in diameter.
Postcontrast computed tomography (CT) scan of the neck showed a well-defined intensely enhancing mass arising from the right paraglottic space and bulging into the right pyriform sinus (Figure 2).
* Residue in pyriform sinus (food bolus stasis in pyriform sinuses after complete swallowing): 0--no stasis; 1--mild to moderate stasis; 2--severe stasis, filling the pyriform sinuses.
(2) The most common head and neck sites are the cheek, anterior neck, larynx, posterior cervical region and pyriform sinus (3).
Pyriform sinus malformations: A cadaveric representation.
The pyriform bodies of Babesia organism was observed in thin blood smear (Fig.