Word · Frequency #17793
methyl
甲基
核心释义
the univalent radical CH3- derived from methane
- 1.
甲基,一种单价烃基(CH3-),形式上由甲烷失去一个氢原子衍生而来；指含有此类基团的化合物或其部分。
The univalent hydrocarbon radical, CH3-, formally derived from methane by the loss of a hydrogen atom; a compound or part of a compound formed by the attachment of such a radical.
甲基,一种单价烃基(CH3-),形式上由甲烷失去一个氢原子衍生而来；指含有此类基团的化合物或其部分。；甲基；[化] 甲基
用法In use
The chemist explained that methyl is the group that makes this compound reactive.
用法提示：这里 methyl 是名词，指从甲烷衍生出的一个价基团CH3-。
In this reaction, two methyls join the carbon chain at different positions.
用法提示：methyl 的复数形式 methyls 在此作名词，表示两个甲基基团。
The student's model shows a methyl placed on the third carbon atom.
用法提示：methyl 作名词，指模型中标出的一个甲基基团。
methyl + noun
methyl 常作定语修饰名词，构成化合物名称，如 methyl alcohol、methyl chloride。
Methyl chloride is a common reagent in organic chemistry.
甲基氯是有机化学中的一种常见试剂。
number + methyls
在化学语境中，methyl 可作可数名词，复数形式为 methyls，指多个甲基（基团）。
相关词与表达Connections
搭配Collocations
- methyl group
- 甲基（基团）
- The methyl group has the formula CH3.甲基的化学式为CH3。
- methyl alcohol
- 甲醇
- Methyl alcohol is a flammable liquid.甲醇是一种易燃液体。
- methyl bromide
- 溴甲烷；甲基溴
- Methyl bromide was once used to fumigate soil.溴甲烷曾被用来熏蒸土壤。
- methyl mercury
- 甲基汞
- Methyl mercury can build up in fish.甲基汞会在鱼类体内累积。
- methyl orange
- 甲基橙
学习提示Learner notes
记忆技巧Memory Tip
记忆：methyl 像 methane（甲烷）少一个氢，留下的一价基团就是甲基。
语境与语域Context & Register
语域：formal 常见场景：化学实验室、科学文献 甲基是化学术语，通常用于学术或专业语境，日常口语中很少出现。
发音与拼写Pronunciation & Spelling
True rhyme: ethyl /ˈeθɪl/ (matching stressed vowel and final /θɪl/). The meth- words (methane, methanol, method) share the opening spelling and sound with methyl but have different endings, so they do not rhyme. Ethyl is sometimes pronounced /ˈiːθaɪl/ in various contexts, so be aware of regional or register differences.
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.