Advanced vocabulary cards for TOEFL prep, featuring definitions, academic context sentences, and etymological roots to help with retention and usage.
20 cards
Front
Aberration
Back
A departure from what is normal, usual, or expected, typically one that is unwelcome. In optics, it refers to a failure of rays to converge at one focus because of a defect in a lens or mirror.
Front
Anomaly
Back
Something that deviates from what is standard, normal, or expected. In scientific contexts, it often refers to data points that do not fit the established pattern.
Front
Arbitrary
Back
Based on random choice or personal whim, rather than any reason or system. In logic or law, it implies a decision made without a consistent rule.
Front
Catalyst
Back
A person or thing that precipitates an event. In chemistry, a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
Front
Cogent
Back
Clear, logical, and convincing. A cogent argument is one that is compelling and difficult to refute due to its sound reasoning.
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