单词 | nodulation |
释义 | nodulationn. Science. 1. = nodule n. 1, 4. Now rare. ΘΚΠ the world > health and disease > ill health > a disease > swelling > [noun] swalm?c1225 bolninga1340 swelling1377 blowinga1398 tumefaction1598 swelth1631 turgency1650 tumidity1828 lumping1851 nodulation1862 nodularity1948 1862 J. Richardson Museum Nat. Hist. 199/1 Dr. Johnston of Berwick described it from a specimen accidentally thrown ashore at Newcastle; the Bermuda Humpback (M. Americana), whose head is covered with tubercles or nodulations. 1872 J. S. Cohen Dis. Throat 138 To the touch the tumor appeared but little hard, without nodulations. 1980 Diagnostic Imaging 49 303 Miliary nodulations of the liver. 1995 Protoplasma 185 194 Root cortical cells in the 1 mm root apex exhibit multiple nodulations after one day of growth. 2. Chiefly Botany. The state of having or the process of acquiring or forming nodules, spec. root nodules. ΘΚΠ the world > plants > part of plant > root > [noun] > root nodule > producing root nodules nodulation1924 nodulating1944 1867 J. King Causes Chronic Dis. 455 Ulcerations..of the roots of the nails, with thickening and nodulation of the nails themselves. 1897 T. C. Allbutt et al. Syst. Med. II. 50 After the stage of nodulation has lasted for a variable period, the final stage of ulceration sets in. 1914 C. V. Piper Forage Plants & their Culture i. 20 Alfalfa is said to have succeeded well in Kansas from its first introduction in that state, but no observations are recorded in regard to nodulation. 1924 Soil Sci. 17 439 Under many conditions nodulation was increased by an application of phosphorus, calcium, or potassium. 1967 Canad. Med. Assoc. Jrnl. 23 Sept. (Abstracts) 14/2 The nodulation was best demonstrated with the first few boluses of barium. 1973 Nature 17 Aug. 459/1 Roots..showed abundant nodulation, similar to the nodules found on many tropical legumes. 1997 New Scientist 11 Jan. 25/2 (title) The molecular basis of infection and nodulation by rhizobia. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < n.1862 |
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