monoazoadj.
/ˌmɒnəʊˈeɪzəʊ/, /ˌmɒnəʊˈazəʊ/, U.S. /ˌmɑnoʊˈeɪzoʊ/, /ˌmɑnoʊˈæzoʊ/ Chemistry.
attributive. Designating compounds, esp. synthetic dyestuffs, having one azo group (—N=N—) in the molecule. Cf. disazo adj.
ΚΠ
1882 O. Wallach in Jrnl. Soc. Chem. Industry Mar. 102/1 Such compounds are obtained if one molecule of a diazo compound is added to an alkaline solution of a monoazo compound of resorcin RN=N—C6H3(OH)2.
1920 F. A. Mason tr. G. von Georgievics Text-bk. Dye Chem. 66 The monoazo dyes derived from resorcinol can be nitrosated, but the mordant dyes obtained possess too slight tinctorial powers to be of much technical value.
1971 R. L. M. Allen Colour Chem. v. 57 About 35 monoazo direct dyes are in use, most of them containing either a thiazole or a J acid residue.
2001 R. M. Christie Colour Chem. iii. 64 This route fails because the monoazo derivative formed from the first azo coupling reaction is so insoluble that the second coupling reaction cannot take place.
This is a new entry (OED Third Edition, September 2017; most recently modified version published online March 2022).
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adj.1882- clear-sighted
- clear-sightedly
- clear-sightedness
- clear-skin
- clear-smiling
- clear-spirited
- clear-spoken
- clear-standing
- clear-starch
- clear-starched
- clear-starcher
- clear-starching
- clear-stemmed
- clear-swayed
- clear-throated
- clear-toned
- clear-up
- clear-voiced
- clear-walk
- clear-walled
- clear-wing
- clear-winged
- clear-witted
- clear-writ
- clearable