definition
用法要点
句型搭配
definition 常与动词如 give, provide, offer 连用，表示“给出定义”；也可与 have, lack 等连用，表示“有/缺乏定义”。在学术写作中，常用被动语态或 it is 结构。
介词用法
definition 后常接 of 引出被定义的对象，如 definition of love；在技术语境中，可与 for 连用，如 definition for a term。
语域说明
definition 在正式和学术语境中常见，如论文、词典；在日常对话中较少使用，多用于讨论概念或技术细节时。口语中可简化为 def。
基础例句
Can you give me the definition of this word? I don't understand it.
你能告诉我这个词的定义吗？我不太明白。
The teacher asked us to write our own definition of happiness for homework.
老师让我们为家庭作业写下自己对幸福的定义。
This TV has high definition, so the picture is very clear.
这台电视是高清的，所以画面非常清晰。
I looked up the definition in the dictionary, but it still seems vague.
我在词典里查了这个定义，但还是觉得有点模糊。
高级例句
In academic writing, a precise definition of key terms is essential to avoid ambiguity.
在学术写作中，对关键术语的精确定义对于避免歧义至关重要。
The legal definition of 'intellectual property' varies across different jurisdictions.
“知识产权”的法律定义在不同司法管辖区有所差异。
The contract includes a broad definition of 'confidential information' to protect business secrets.
合同中包含了对“机密信息”的宽泛定义，以保护商业机密。
Researchers often debate the exact definition of 'artificial intelligence' in scientific papers.
研究者在科学论文中经常争论“人工智能”的确切定义。
高频搭配
verb
adjective
noun
adverb
preposition
phrase
常见错误
definition 后应接 of 引出定义对象，而不是 about。about 更常用于描述或讨论，如 talk about。
definition 是名词，不能直接用 very 修饰；应使用形容词如 clear、precise 来描述其特性，避免重复用词。
近义词辨析
explanation
explanation 更侧重于说明原因、过程或理由，而 definition 特指对词语或概念的确切含义界定。explanation 范围更广，可用于各种情境。
She gave an explanation of how the machine works (说明工作原理), but the definition of 'machine' is a device that performs tasks (定义“机器”为执行任务的装置)。
description
description 描述事物外观、特征或细节，不一定精确或正式；definition 强调准确、权威的含义界定，常用于正式或技术语境。
His description of the event was vivid (描述生动), but the legal definition of 'assault' is specific (但“袭击”的法律定义是具体的)。