英语词汇ultramicro-的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

ultramicro-, prefix and quasi-a. Chem.|ʌltrəˈmaɪkrəʊ|[f. ultra- 2 + micro- 2 a, 8 b.]Formative element denoting chemical analysis or research which involves very minute quantities (of the order of a few microgrammes or less), as in ultramicroanalysis, ultramicro-analytical adj., ultramicro-chemistry, ultramicro-chemical adj. Also used without a hyphen as an independent word.1937Ann. Rev. Biochem. VI. 90 The methods of capillary colorimetry are necessarily more difficult than the other ultramicro methods which have been discussed.1940Ibid. IX. 599 Drop analysis.—Ultramicrochemical methods have been advanced..in regard to the number of constituents determinable.1946Chem. Abstr. XL. 6017 (heading) Ultramicroanalysis. III. A method for enriching copper by selective adsorption and for destroying organic matter in the determination of copper.1946Chem. & Engin. News XXIV. 1195/2 The field which embraces the chemical study of material on this minute scale of operation has been given the name ‘ultramicrochemistry’ by P. L. Kirk, a pioneer investigator in the field of quantitative chemistry on the microgram scale.1946Nature 31 Aug. 313/1 (heading) Ultra-micro methods in nuclear chemistry.1962H. Heath in A. Pirie Lens Metabolism Rel. Cataract 365 Ultra-microanalytical methods have to be used to detect the last traces of ascorbic acid.1971Analytical Biochem. XLIV. 503 (heading) Quantitative ultramicroanalysis of amino acids in the form of their DNS-derivatives.1973Biol. Abstr. LVI. 1717/1 (heading) Ultramicrochemical methods for the analysis of tissues and cells of the inner ear.1979Ma & Rittner Mod. Organic Elemental Analysis xi. 366 Since it is now possible to carry out organic synthesis at the microgram level, the applications of ultramicro analytical methods become apparent.

ultramicro- /ʌltrəˈmʌɪkrəʊ/ prefix. Also as attrib. adjective ultramicro. M20.

ORIGIN: from ultra- + micro-.

Chemistry. Designating or pertaining to chemical analysis or research involving very minute quantities (of the order of a few micrograms or less), as ultramicroanalysis, ultramicrochemical adjective, ultramicro method, etc.

ultramicro-
combining form
Etymology: ultra- + micr-
: of, involving, or being for quantities of material smaller than micro quantities : on a scale smaller than micro

词汇	ultramicro-
词根词缀	OED SOED Webster *ultramicro-, prefix and quasi-a.* Chem.\|ʌltrəˈmaɪkrəʊ\|[f. ultra- 2 + micro- 2 a, 8 b.]Formative element denoting chemical analysis or research which involves very minute quantities (of the order of a few microgrammes or less), as in *ultramicroanalysis, ultramicro-analytical* adj., *ultramicro-chemistry, ultramicro-chemical* adj. Also used without a hyphen as an independent word.1937Ann. Rev. Biochem. VI. 90 The methods of capillary colorimetry are necessarily more difficult than the other ultramicro methods which have been discussed.1940Ibid. IX. 599 Drop analysis.—Ultramicrochemical methods have been advanced..in regard to the number of constituents determinable.1946Chem. Abstr. XL. 6017 (heading) Ultramicroanalysis. III. A method for enriching copper by selective adsorption and for destroying organic matter in the determination of copper.1946Chem. & Engin. News XXIV. 1195/2 The field which embraces the chemical study of material on this minute scale of operation has been given the name ‘ultramicrochemistry’ by P. L. Kirk, a pioneer investigator in the field of quantitative chemistry on the microgram scale.1946Nature 31 Aug. 313/1 (heading) Ultra-micro methods in nuclear chemistry.1962H. Heath in A. Pirie Lens Metabolism Rel. Cataract 365 Ultra-microanalytical methods have to be used to detect the last traces of ascorbic acid.1971Analytical Biochem. XLIV. 503 (heading) Quantitative ultramicroanalysis of amino acids in the form of their DNS-derivatives.1973Biol. Abstr. LVI. 1717/1 (heading) Ultramicrochemical methods for the analysis of tissues and cells of the inner ear.1979Ma & Rittner Mod. Organic Elemental Analysis xi. 366 Since it is now possible to carry out organic synthesis at the microgram level, the applications of ultramicro analytical methods become apparent. ultramicro- /ʌltrəˈmʌɪkrəʊ/ prefix. Also as attrib. adjective ultramicro. M20. ORIGIN: from ultra- + micro-. Chemistry. Designating or pertaining to chemical analysis or research involving very minute quantities (of the order of a few micrograms or less), as ultramicroanalysis, ultramicrochemical adjective, ultramicro method, etc. ultramicro- combining form Etymology: ultra- + micr- : of, involving, or being for quantities of material smaller than micro quantities : on a scale smaller than micro
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