noun
1. (mathematics) calculation of the value of a function outside the range of known values (Freq. 3)
• Derivationally related forms: ↑extrapolate
• Topics: ↑mathematics, ↑math, ↑maths
• Hypernyms: ↑calculation, ↑computation, ↑figuring, ↑reckoning
2. an inference about the future (or about some hypothetical situation) based on known facts and observations
• Derivationally related forms: ↑extrapolate
Useful english dictionary. 2012.