idalist)

[ pighian pyramids. See Malpighian. - Posterior pyramid, a funiculus gracilis. [Rare.] - Pyramid of the cerebellum, a lobe of the vermis inferior of the cerebellum, behind the uvula. It is connected laterally with the digastric lobes. - Pyramid of the thyroid gland an occasional conical third lobe of the thyroid gland.-Pyramid of the tympanum, a small conical bony prominence on the posterior wall of the tympanic cavity, behind the fenestra oval is, containing the stapedius muscle in its interior, and transmitting the tendon of that muscle through a foramen at its apex. - Pyramid of the vestibule, a prominence on the inner wall of the vestibular cavity, behind the fovea hemispheric a. - Pyramid of Wistar, the sphenoturbinal bone. - Pyramid pool. See pool2, n., 2 (a). - Pyramids of Ferrein, a name given to the bundles of straight renal tubules which constitute the medullary rays be These bundles as they approach the margin become smaller and conical from the diminution of the number of tubules, whence the name. - Pyramids of the medulla oblong at a, anterior and posterior. See def. 4, and posterior pyramid, above. - Pyramids of the spine, a name given to the anteriorly projecting parts of the spinal column. If, according unto his [Aristotle's] own ethicks, sense is not e ential unto felicity, but a man may be happy without the apprehension thereof, surely in that sense he is pyramidally happy. Sir T. Browne , Vulg. Err., vii. 13. pyramid ate (pi-ram'i-dāt), a. [ pyramid + a prominent angle: as, a pyrami- date fascia. Pyramid ell a (pir"a-mi-del'ä), n. [NL. (Lamarck, 1796), dim. of L. pyramis ( -mid- ), a pyramid: see pyramid .] The typical genus of Pyramidellidæ. Pyramid ell ace a (pir-a-mid-e-lā'- sē-a), n . pl . [NL., Pyramid ell a + Pyramid ell a -ace a .] Same as Pyramidellidæ . Pyramidellidæ (pir"a-mi-del'i-dē), (Obeliscus) do n. pl. [NL., Pyramid ell a + -idæ.] A family of gym no glo ate holostomatous pectin i branchiate gastropods, typified by the ge pyrena lar lip plicated or simple. Species are distributed in all temperate and warm seas. pyramides, n. Plural of pyramis . Pyram pyramidia, n. Plural of pyramidion . pyramidic (pir-a-mid'ik), a . [ pyramid +-ic.] Having laving the form of a pyramid; pyramidal. Their gold in pyramidic plenty piled. Shenstone, Elegies, xix. pyramidical (pir-a-mid'i-kal), a. [ The contrivance of nature is singular in the opening and shutting of bindeweeds, performed by five inflexures, distinguishable by pyramidical figures, and also different colours. Sir T. Browne , Garden of Cyrus, iii. This bounding line [of a building] from top to bottom may either be inclined inwards, and the ma therefore pyramidical ; or vertical, and the ma form one grand cliff; or inclined outwards, as in the advancing fronts of old houses. Ruskin , Seven Lamps of Architecture, iii. § 6. pyramidically (pir-a-mid'i-kal-i), adv . In a pyramidical manner; in the form of a pyramid. Pelion, being the least, is placed above O a, and thus they rise pyramidically . Pope , Ody ey, xi., note. pyramidical ne (pir-a-mid'i-kal-nes), n. The character of being pyramidic. " Bailey , 1727. pyramidion (pir-a-mid'i-on), n.; pl. pyramidia (-a). [NL., πυραμίδιον , dim. of πυραμίς , α pyramid: see pyramid .] In arch ., the apex in the shape of a small pyramid which often terminates the top of an obelisk, and was very commonly sheathed with a cap of metal: often applied to any comparatively small structure or member of pyramidal shape. pyramidist (pir'a-mid-ist), n. [ pyramid + -ist .] One who makes a special study of the pyramids of Egypt, or is versed in their structure and history.