| HYPERBOLOID | • hyperboloid n. A particular surface in three-dimensional Euclidean space, the graph of a quadratic with all three variables… • HYPERBOLOID n. a solid figure in which some of the plane sections are hyperbolas. |
| HYPOCYCLOID | • hypocycloid n. (Geometry) The locus of a point on the circumference of a circle that rolls without slipping inside… • HYPOCYCLOID n. a curve generated by a point on the circumference of a circle which rolls on the inside of another circle. |
| HYPODIPLOID | • hypodiploid adj. (Genetics) Having fewer than the diploid number of chromosomes. • hypodiploid n. Such an organism. • HYPODIPLOID adj. having slightly fewer than the diploid number of chromosomes. |
| LYCOPODIUMS | • lycopodiums n. Plural of lycopodium. • LYCOPODIUM n. a genus of mosslike plants, aka clubmoss. |
| PALLIDOTOMY | • pallidotomy n. A neurosurgical procedure whereby a tiny electrical probe is placed in the globus pallidus and heated… |
| PODOPHYLINS | • PODOPHYLIN n. a cathartic resin obtained from the rhizomes of the Podophyllum genus, also PODOPHYLLIN. |
| PODOPHYLLIN | • podophyllin n. (Organic chemistry) A resinous powder obtained by precipitating an alcoholic tincture of the rhizome… • PODOPHYLLIN n. a cathartic resin obtained from the rhizomes of the Podophyllum genus, also PODOPHYLIN. |
| POLYPLOIDAL | • polyploidal adj. Alternative form of polyploid. • POLYPLOIDAL adj. having more than two sets (diploid) of the basic chromosome number (haploid), also POLYPLOIDIC. |
| POLYPLOIDIC | • POLYPLOIDIC adj. having more than two sets (diploid) of the basic chromosome number (haploid), also POLYPLOIDAL. |
| POSTHOLIDAY | • postholiday adj. Occurring after, or as a consequence of, a holiday; often specifically after the holiday season of late December. • POSTHOLIDAY adj. taking place after a holiday. |
| PTERIDOLOGY | • pteridology n. (Botany) The scientific study of ferns and other pteridophytes. • PTERIDOLOGY n. the study of ferns. |
| SPONDYLOSIS | • spondylosis n. (Medicine) A degenerative disease in which the vertebral joints of the spine become stiff and then fused. • SPONDYLOSIS n. disintegration of one or more vertebrae. |
| STYLOPODIUM | • stylopodium n. (Botany) An expansion at the base of the style, as in umbelliferous plants. • STYLOPODIUM n. an enlargement at the end of the style base of certain flowers. |