单词 | multipositive |
释义 | multipositiveadj.n. A. adj. Having more than one positive charge. Also: positive in more than one test or assay. rare. ΚΠ 1927 Proc. National Acad. Sci. U.S.A. 13 738 White circles or ellipses with a numeral (3, 4 or 5) within for multipositive ions. 1978 Jrnl. Immunol. Methods 21 79 Normal degranulation could be recovered by pretreatment of the experimental surface with a multipositive charged molecule. 1989 Science 8 Dec. 1272 A developmental lineage with multipositive progenitor cells. 1998 Jrnl. Vet. Diagnostic Investig. 10 326 This reactivity was not due to cross-reactions as initially suspected, and these multipositive sera were designated false-positive sera. B. n. Printing. An array of many similar positive images used in the printing of small items several at a time by photolithography. ΘΚΠ society > leisure > the arts > visual arts > printmaking > photomechanical or process printing > [noun] > photolithography > images multi-negative1922 multipositive1933 1933 C. M. Willy Pract. Photo-lithogr. vii. 158 After developing and fixing, the enlarged multi-positive thus obtained is masked and placed in the unit carrier ready for projection. 1971 D. Potter Brit. Elizabethan Stamps ii. 23 In the first stages of printing a multipositive is prepared, from which the printing cylinders are made. 1992 Gibbons Stamp Monthly Mar. 51/2 It seems fair to assume that this arrow was either engraved in error or appeared as a result of taking the images for the coil cylinder from a multipositive image already etched to provide images for sheet cylinders. This entry has been updated (OED Third Edition, March 2003; most recently modified version published online March 2022). < adj.n.1927 |
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