Middle

theory

/ˈθiːəri/

the · o · ry /ˈθiː · ə · ri/

English Definition

n. idea to explain something

中文释义

理论，假说

Significado en Español

teoría, hipótesis

한국어 뜻

이론, 가설

Nghĩa Tiếng Việt

lý thuyết, giả thuyết

Example Sentence

Darwin’s theory changed biology.

达尔文理论改变了生物学。

Synonyms

hypothesis concept

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Memory Aid / 记忆技巧

theory (theory)

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Practice — Synonym (ISEE Verbal)

Select the word that is closest in meaning to the word “theory” as it is used below: The scientist proposed a new theory to explain the unusual behavior of the particles.

A hypothesis
B practice
C method
D tool

Show answer

A — hypothesis. “theory” means n. idea to explain something

Practice — Sentence Completion (ISEE Verbal)

The scientist proposed a bold new ______ to explain the strange lights.

A theory
B fact
C proof
D certainty

Show answer

A — theory. “theory” means n. idea to explain something

Common questions about “theory”

What does “theory” mean?

theory — n. idea to explain something. In Chinese: 理论，假说.

How do you pronounce “theory”?

theory is pronounced /ˈθiːəri/. It breaks into 3 syllables: the · o · ry.

How do you use “theory” in a sentence?

Darwin’s theory changed biology. (达尔文理论改变了生物学。)

What are synonyms for “theory”?

hypothesis, concept — all close in meaning to theory (n. idea to explain something).

Is “theory” an ISEE Middle-level word?

Yes. theory appears on the iSEE Vocab Middle list, which covers 672 words for the ISEE and SSAT.

How can I remember “theory”?

theory (theory)

Progress / 学习进度

620 / 672

92% through this level

Mastered: 0 / 672 (0%)

⬇ Download the iSEE Vocab app to keep tracking your learning progress across sessions and devices. / 下载 iSEE Vocab App，持续跟进你的学习进度。

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theory

Practice — Synonym (ISEE Verbal)

Practice — Sentence Completion (ISEE Verbal)

More Middle-level ISEE words

Common questions about “theory”