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单词 psammo-
释义

psammo-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.
Forms: before a vowel psamm-.
Origin: A borrowing from Greek. Etymon: Greek ψαμμο-.
Etymology: < Hellenistic Greek ψαμμο-, combining form (in e.g. ψαμμόγεως with a sandy soil) of ancient Greek ψάμμος sand, of uncertain origin, perhaps a popular formation; compare -o- connective.Apparently earliest in psammophilous adj. Compare earlier German Psammoma psammoma n., and compare also earlier psammurgical adj., psammite n., Psammophis n. Combining with second elements ultimately of Greek origin.
Of, relating to, or resembling sand.
psammocarcinoma n.
Brit. /ˌsamə(ʊ)kɑːsᵻˈnəʊmə/
,
U.S. /ˌsæmoʊˌkɑrsəˈnoʊmə/
Pathology a carcinoma containing psammoma bodies.
ΚΠ
1890 J. S. Billings National Med. Dict. II. 400/2 Psammocarcinoma, a carcinoma containing calcareous concretions.
1896 A. Bruce tr. R. Thoma Text-bk. Gen. Pathol. I. xi. 540 Psammo-glioma and psammo-carcinoma are also known.
1998 Amer. Jrnl. Surg. Pathol. 22 849 The psammocarcinomas showed at least 75% psammoma bodies, no more than moderate cytological atypia, tissue or lymphovascular space invasion, or both.
psammolithic adj. Geology Obsolete rare (of a series of strata) consisting chiefly of sandstone.
ΚΠ
1885 H. G. Seeley Phillips's Man. Geol. (new ed.) I. v. 55 Throughout the period of the Psammolithic series, the same rocks continued to be denuded.
psammophyte n.
Brit. /ˈsamə(ʊ)fʌɪt/
,
U.S. /ˈsæməˌfaɪt/
[after German Psammophyt (1898 in the passage translated in quot. 1903); compare earlier psammophile n.] Botany and Ecology a plant restricted to sandy habitats; a psammophilous plant.
ΘΚΠ
the world > plants > by habitat or distribution > [noun] > that grows in (and binds) sand
sand plant1849
sand-binder1887
psammophile1888
psammophyte1903
1903 W. R. Fisher tr. A. F. W. Schimper Plant-geogr. ii. i. 180 The formations of the sandy sea-shore and of dunes serve as excellent examples of the vegetation of psammophytes [Ger. der Psammophyten].
1961 S. P. Suslov Physical Geogr. of Asiatic Russia iv. 497 Another pioneer psammophyte is the saxaul (Ammodendron conollyi) a member of the legume family, and a plant endemic to the sandy deserts of central Asia.
2003 Biol. Conservation 115 151/1 The natural beach vegetation on the sand dunes includes psammophytes such as Ipomea pescaprae.
psammosarcoma n.
Brit. /ˌsamə(ʊ)sɑːˈkəʊmə/
,
U.S. /ˌsæmoʊˌsɑrˈkoʊmə/
Pathology (now rare or disused) a sarcoma containing psammoma bodies; a malignant meningioma.
ΘΚΠ
the world > health and disease > ill health > a disease > growth or excrescence > [noun] > tumour > malignant tumours
cancer1527
carcinoma1583
crab1614
scirrhus1759
sarcoma1804
malignant melanoma1838
melanocarcinoma1857
adenosarcoma1871
adenocarcinoma1872
angiosarcoma1873
lymphosarcoma1874
mycosis fungoides1874
melanosarcoma1875
osteosarcoma1876
chondrosarcoma1883
psammosarcoma1886
trophoblast1889
liposarcoma1893
multiple myeloma1897
sarcoid1899
leiomyosarcoma1914
spongioblastoma1918
osteogenic sarcoma1923
sympathicoblastoma1927
reticulosarcoma1928
carcinoma in situ1932
malignancy1934
teratocarcinoma1946
sympathoblastoma1960
sympathogonioma1966
sympathicogonioma1974
1886 Lancet 6 Feb. 251/1 The second specimen was a Psammo-sarcoma of the Brain growing from the junction of the tentorium with the falx cerebri.
1901 Lancet 26 Jan. 251/1 A psammosarcoma as large as an orange had grown from the falx cerebri, compressing both prefrontal lobes.
1923 Endocrinology 7 386 In quite a number of cases termed psammosarcomata, a number of corpora arenacea have been found.
psammosere n.
Brit. /ˈsamə(ʊ)sɪə/
,
U.S. /ˈsæməˌsɪ(ə)r/
Ecology a plant succession originating on sand.
ΘΚΠ
the world > life > biology > balance of nature > [noun] > replacement of one species by another > sere
lithosere1916
prisere1916
psammosere1916
sere1916
subsere1916
halosere1929
plagiosere1935
1916 F. E. Clements Plant Succession ix. 182 While the surfaces of rock and of dune-sand may be almost equally dry, the differences of hardness and stability result in very dissimilar adseres. These may be distinguished as lithoseres..and psammoseres.
1964 V. J. Chapman Coastal Vegetation vi. 150 The dune succession..is quite clearly a prisere, and since it develops on sand it is often known as a Psammosere.
1984 Jrnl. Ecol. 72 26 Early successional composition was..considered to be highly deterministic, allowing the definition of a multitude of seres (eusere, hydrosere, mesosere, psammosere, pyrosere, xerosere, etc.).
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
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comb. form1885
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