abstractionn.
英 əb'strækʃ(ə)n | 美 æb'strækʃən
中文n. 抽象；提取；抽象概念；空想；心不在焉
词根词源
abstraction (n.)c. 1400, "a withdrawal from worldly affairs, asceticism," from Old French abstraction (14c.), from Latin abstractionem (nominative abstractio), noun of action from past participle stem of abstrahere "drag away, pull away, divert" (see abstract (adj.)). Meaning "idea of something that has no actual existence" is from 1640s.
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