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inflection point

[ in-flek-shuhn point ]
/ ɪnˈflɛk ʃən ˌpɔɪnt /
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noun
Also called flex point [fleks-point], /ˈflɛks ˌpɔɪnt/, point of inflection. Mathematics. a point on a curve at which the curvature changes from convex to concave or vice versa.
a point at which a major or decisive change takes place; critical point: We’re at an inflection point where we’ll see the technology move forward at a much faster pace.
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Origin of inflection point

First recorded in 1715–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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