In physics, the concept of time is often treated as an abstract dimension rather than a tangible entity.
在物理学中，时间的概念常被视为抽象维度，而非有形实体。
The scientific paper's abstract states its hypothesis in a single sentence, and the remainder of the paper is organized into methods, results, and discussion sections that test and interpret that hypothesis.
From a Text Structure and Purpose question · Craft and Structure
Which choice best defines “abstract”?
B — Existing in thought or as an idea but not having a physical or concrete existence. “abstract” means existing in thought or as an idea but not having a physical or concrete existence.
Which word means “existing in thought or as an idea but not having a physical or concrete existence”?
C — abstract. “abstract” means existing in thought or as an idea but not having a physical or concrete existence.
abstract — existing in thought or as an idea but not having a physical or concrete existence. In Chinese: 抽象的.
abstract is pronounced /ˈæbstrækt/.
In physics, the concept of time is often treated as an abstract dimension rather than a tangible entity. (在物理学中，时间的概念常被视为抽象维度，而非有形实体。)
theoretical, conceptual, intangible — all close in meaning to abstract (existing in thought or as an idea but not having a physical or concrete existence).
concrete, tangible — each the opposite of abstract (existing in thought or as an idea but not having a physical or concrete existence).
Yes. abstract is on the SAT Prep Easy list — mid-frequency academic words that do get tested. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
'ab(away)+stract(draw)' to draw away from physical representation