| 单词 | brain sand |
| 释义 | > as lemmasbrain sand brain sand n. [after German Hirnsand (1791 or earlier)] small calcified concretions situated within or near the pineal body; = acervulus n. 1. ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > brain > [noun] > substances of medulla?a1425 pith1594 acervulus cerebri1791 brain sand1831 oleophosphoric acid1839 wetware1963 1831 J. F. South tr. A. W. Otto Compend. Human & Compar. Pathol. Anat. ii. §20. i. 389 Brain-sand, acervulus, also in animals, viz. in the fallow-deer. 1949 H. W. C. Vines Green's Man. Pathol. (ed. 17) iii. 40 They are very liable to become calcified, and they then constitute one form of ‘brain-sand’ which is so often met with in these situations. 2005 Jrnl. Neurol. Sci. 238 Suppl. S495/1 Histological methods..were used to study epiphysis morphology and distribution of the brain sand (corpora arenacea, acervulus). brain sand 8. Anatomy and Pathology. Applied to various substances resembling sand, present either normally or as pathological products in certain animal organs or secretions. brain sand: see quot. 1856; also called pineal sand (Syd. Soc. Lex.). urinary sand: a substance of finer particles than those of gravel (gravel n. 4). ΘΚΠ the world > life > the body > internal organs > [noun] > substance present in sand1577 the world > life > the body > secretory organs > secretion > [noun] > substance present in sand1577 the world > health and disease > ill health > a disease > growth or excrescence > [noun] > concretion > sandy or granular substance sand1577 writer's sand1660 saburra1710 1577 J. Frampton tr. N. Monardes Three Bookes i. f. 19 The chief vertue that it hath, is in the paine of the stone in the Kidneis and Raines, and in expellyng of Sande and stone. 1707 H. Sloane Voy. Islands I. 60 A Seaman much troubled with Sand and gross Humors, eating of it..found so much benefit [etc.]. 1822 J. M. Good Study Med. IV. 503 Urinary sand..is of two kinds, White and Red. 1856 J. W. Griffith & A. Henfrey Micrographic Dict. 605/1 Brain-sand, or the acervulus cerebri, is found in the pineal gland and the choroid plexus, sometimes also in the pia mater [etc.]. 1890 J. Cagney tr. R. von Jaksch Clin. Diagnosis vii. 205 Concretions of considerable size are occasionally to be seen with the naked eye in the urine (urinary sand). < as lemmas |
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