| 释义 |
obliterative, a.|əˈblɪtərətɪv|
[f. as obliterate v. + -ive.]
1. a. Having the quality of obliterating; tending to obliterate.
1802–12Bentham Ration. Judic. Evid. (1827) III. 50 Forgery is susceptible of one main distinction—into fabricative and obliterative. 1858National Rev. Oct. 342 If the education and lives of women have been so utterly obliterative of such important qualities [etc.].
b. Phys. and Path. (See obliteration 2.)
1899Allbutt's Syst. Med. VI. 301 Specimen of obliterative endarteritis.
2. Zool. obliterative coloration, obliterative shading = countershading.
1909[see countershading]. 1926W. P. Pycraft Camouflage in Nature vi. 66 This type of coloration he [sc. A. H. Thayer] designated ‘obliterative coloration’. 1940H. B. Cott Adaptive Coloration in Animals i. iii. 39 The appearance of obliterative shading can be..reproduced by means of patterns..rather than by the more usual method of graded ground colour. 1964A. L. Thomson New Dict. Birds 139/2 Graded coloration, ranging from darkest on the back to lightest on the under parts, neutralises relief and thus renders the solid body as an apparently flat surface. Obliterative shading forms a basis for the coloration of nearly all cryptic birds, whether or not they carry a super-imposed pattern. |