Definition of naphthoquinone in English:

naphthoquinone

(also napthaquinone, naphthaquinone)

noun ˌnafθəʊˈkwɪnəʊnˌnapθəʊˈkwɪnəʊn

Chemistry

Each of six isomeric compounds, C₁₀H₆O₂, notionally obtained by replacing two of the ≧CH groups of naphthalene by carbonyl groups; specifically (more fully "1,4-naphthoquinone", "α-naphthoquinone") a volatile yellow solid whose molecule forms part of the structure of vitamin K.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From naphtha + -o- + quinone.

Definition of naphthoquinone in US English:

naphthoquinone

(also napthaquinone, naphthaquinone)

noun

Chemistry

Each of six isomeric compounds, C₁₀H₆O₂, notionally obtained by replacing two of the ≧CH groups of naphthalene by carbonyl groups; specifically (more fully "1,4-naphthoquinone", "α-naphthoquinone") a volatile yellow solid whose molecule forms part of the structure of vitamin K.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From naphtha + -o- + quinone.

单词	naphthoquinone
释义	Definition of naphthoquinone in English: naphthoquinone (also napthaquinone, naphthaquinone) noun ˌnafθəʊˈkwɪnəʊnˌnapθəʊˈkwɪnəʊn Chemistry Each of six isomeric compounds, C₁₀H₆O₂, notionally obtained by replacing two of the ≧CH groups of naphthalene by carbonyl groups; specifically (more fully "1,4-naphthoquinone", "α-naphthoquinone") a volatile yellow solid whose molecule forms part of the structure of vitamin K. Origin Late 19th century; earliest use found in Journal of the Chemical Society. From naphtha + -o- + quinone. Definition of naphthoquinone in US English: naphthoquinone (also napthaquinone, naphthaquinone) noun Chemistry Each of six isomeric compounds, C₁₀H₆O₂, notionally obtained by replacing two of the ≧CH groups of naphthalene by carbonyl groups; specifically (more fully "1,4-naphthoquinone", "α-naphthoquinone") a volatile yellow solid whose molecule forms part of the structure of vitamin K. Origin Late 19th century; earliest use found in Journal of the Chemical Society. From naphtha + -o- + quinone.
随便看	have a place have a plum in mouth have a plum in one's mouth have a plum in one's mouth have a poor opinion of have a pop at have a practice game have a practice session have a predilection for have a predilection/proclivity/penchant for have a preference for have a prior engagement have a prior/previous engagement have a problem have a problem with have a problem with have a proclivity for have a propensity have a propensity for have a punch-up have a punt at have a quick look have a quick look at have a race with have a rapport 压榨压气压港压痛压秤压缩压缩空气压舱石压船压货 zusammengestoßen zusammengetragen zusammengewachsenen Zusammenhalt Zusammenhalt Zusammenhang Zusammenhang Zusammenhangen zusammenhanglos Zusammenhanglosigkeit