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polygyria pol·y·gy·ri·a (pŏl’ĭ-jī’rē-ə)
An excessive number of convolutions in the brain.


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  • Polyhedral

    [pol-ee-hee-druh l] /ˌpɒl iˈhi drəl/ adjective 1. of, relating to, or having the shape of a . adj. 1741, from polyhedron + -al (1). polyhedron (pŏl’ē-hē’drən) Plural polyhedrons or polyhedra A three-dimensional geometric figure whose sides are polygons. A tetrahedron, for example, is a polyhedron having four triangular sides. ◇ A regular polyhedron is a […]

  • Polyhedral-angle

    noun, Geometry. 1. a configuration consisting of the lateral faces of a polyhedron around one of its vertices. The portion of a pyramid including one of its points is such a configuration. /ˌpɒlɪˈhiːdrəl/ noun 1. a geometric configuration formed by the intersection of three or more planes, such as the faces of a polyhedron, that […]

  • Polyhedron

    [pol-ee-hee-druh n] /ˌpɒl iˈhi drən/ noun, plural polyhedrons, polyhedra [pol-ee-hee-druh] /ˌpɒl iˈhi drə/ (Show IPA) 1. a solid figure having many faces. /ˌpɒlɪˈhiːdrən/ noun (pl) -drons, -dra (-drə) 1. a solid figure consisting of four or more plane faces (all polygons), pairs of which meet along an edge, three or more edges meeting at a […]

  • Polyhedrosis

    [pol-ee-hee-droh-sis] /ˌpɒl i hiˈdroʊ sɪs/ noun, plural polyhedroses [pol-ee-hee-droh-seez] /ˌpɒl i hiˈdroʊ siz/ (Show IPA) 1. an often fatal disease of certain insect larvae or decapod crustaceans, caused by viruses containing DNA.

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