idea

n. 主意, 办法, 理想, 思想, 概念, 意见
【医】 观念, 思想
相关词组:
have no idea of

形容词:idealess 

i.de.a

n.（名词）
Something, such as a thought or conception, that potentially or actually exists in the mind as a product of mental activity.
思想，概念：思想活动的产物，它是存在或潜伏于大脑中的想法或概念
An opinion, a conviction, or a principle:
观点、信念或原则：
例句：
has some strange political ideas.
有一些怪异的政治主张

A plan, scheme, or method.
计划、企图或方法
The gist of a specific situation; significance:
要旨，要领：特定条件下的妙方；重要性：
例句：
The idea is to finish the project on time and under budget.
要点是准时完成计划并且不超出预算

A notion; a fancy.
想法；猜想
Music A theme or motif.
【音乐】 话题，主题
Philosophy
【哲学】
In the philosophy of Plato, an archetype of which a corresponding being in phenomenal reality is an imperfect replica.
理念：柏拉图哲学中的一种原型，它在现实物质世界中有一个并不完美的复制品
In the philosophy of Kant, a concept of reason that is transcendent but nonempirical.
纯粹理性概念：康德哲学中的一个超验的，非经验的理性概念
In the philosophy of Hegel, absolute truth; the complete and ultimate product of reason.
绝对真理：黑格尔哲学中的绝对真理；完整的和最终的理性产物
Obsolete A mental image of something remembered.
【废语】 物像：记忆中的事物在脑海中的影象

来源：
Middle English
中古英语
from Latin
源自 拉丁语
from Greek * see weid-
源自 希腊语 *参见 weid-

【引伸】
ide.aless
adj.（形容词）
<参考词汇><同义词>idea,thought,notion,concept,conceptionThese nouns refer to what is formed or represented in the mind as the product of mental activity.
这些名词都是指脑力活动后在脑海中出现的表像。
Idea has the widest range:
Idea 一词词意最为广泛：
例句：
Fruit is not her idea of a dessert.
水果不是她所想要的甜点。

例句：
Don`t get any ideas about revenge.
不要想着报仇。

例句：
.Human history is in essence a history of ideas. (H.G. Wells).
.人类历史本质上是一部思想史. (H·G·威尔斯）。

Thought is applied to what is distinctively intellectualand thus especially to what is produced by contemplation and reasoningas distinguished from mere perceiving, feeling, or willing:
Thought 一词是指明显的智力活动，特别是指经过思考和推理后得出的结论，与单纯的观察、感觉或愿望不同：
例句：
Quiet—she`s trying to collect her thoughts.
静悄悄地--她正努力集中着自己的思想。

例句：
I have no thought of going to Europe.
我不想去欧洲。

例句：
.Language is the dress of thought. (Samuel Johnson).
.语言是思想的外衣. （萨缪尔·约翰逊）。

Notion often refers to a vague, general, or even fanciful idea:
Notion 一般指模糊的、笼统的甚至是荒谬的想法：
例句：
.She certainly has some notion of drawing. (Rudyard Kipling).
.她对绘画当然有些了解. （拉第尔德·吉卜林）。

Concept andconception are applied to mental formulations on a broad scale:
Concept 和conception 用于大范围内的成形的思想：
例句：
He seems to have absolutely no concept of time.
他看起来根本没有时间观念。

例句：
.Every succeeding scientific discovery makes greater nonsense of old-time conceptions of sovereignty. (Anthony Eden).
.每一次成功的科学发现都使以前牢不可破的传统观念变得更为一文不值. （安东尼·伊顿）