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extrapolate (something) from (something)

To deduce information from something Yeah, I extrapolated that they broke up from the scene I walked in on—Lauren sitting in the dark and crying with no sign of her so-called boyfriend anywhere.
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extrapolate something from something

to reason out the answer from the known facts. I cannot extrapolate what he meant from these notes. Can you extrapolate the annual total from the company's sales so far this year?
See also: extrapolate
References in periodicals archive ?
To monitor urban air quality, environmental agencies typically measure pollutant concentrations in samples collected at centralized outdoor locations and extrapolate individuals' average exposures from those measurements.
It's difficult to extrapolate from these animal data whether or not the effect would be the same on humans.
The researchers extrapolate that across Indonesia, the 1997-1998 fires released a total of 0.
Vatican Radio refuses to make public the power and direction of the transmissions from rotating antennas, making it impossible to extrapolate radiation doses from one area to an adjacent one.
To extrapolate to Earth's inner core, Heinz and his colleagues recently studied alloys of iron and silicon at temperatures up to 2,100 [degrees] C and pressures exceeding 800,000 times atmospheric pressure at sea level.
However, because there's little data on actual crowd behavior for testing the new model, he says it's premature to extrapolate the simulation results to real-world situations.
It's safer not to extrapolate too far," says study coauthor Catherine Schairer, an epidemiologist at NCI.
From a very short period of time, you can't extrapolate the rate of change of a very slow process," he says.