[ik-strap-uh-leyt] /ɪkˈstræp əˌleɪt/
verb (used with object), extrapolated, extrapolating.
to infer (an unknown) from something that is known; conjecture.
Statistics. to estimate (the value of a variable) outside the tabulated or observed range.
Mathematics. to estimate (a function that is known over a range of values of its independent variable) to values outside the known range.
verb (used without object), extrapolated, extrapolating.
to perform extrapolation.
(maths) to estimate (a value of a function or measurement) beyond the values already known, by the extension of a curve Compare interpolate (sense 4)
to infer (something not known) by using but not strictly deducing from the known facts
1874, a back-formation from extrapolation by analogy of interpolate. Said in early references to be an expression of Sir George Airy (1801-1892), English mathematician and astronomer. Related: Extrapolated; extrapolating.
To estimate the value of a quantity that falls outside the range in which its values are known.
[ek-struh-pruh-fesh-uh-nl] /ˌɛk strə prəˈfɛʃ ə nl/ adjective 1. outside ordinary limits of interest or duty.
[ek-struh-pi-ram-i-dl] /ˌɛk strə pɪˈræm ɪ dl/ adjective 1. pertaining to or involving nerve tracts other than the tracts, especially the corpus striatum and its associated structures. 2. located outside the tracts. extrapyramidal ex·tra·py·ram·i·dal (ěk’strə-pĭ-rām’ĭ-dl) adj. Relating to or involving neural pathways situated outside or independent of the pyramidal tracts.
- Extrapyramidal disease
extrapyramidal disease n. A degenerative disease, such as Parkinsonism or chorea, that affects the corpus striatum of the brain or other part of the extrapyramidal motor system and is characterized by tremor, muscular rigidity or weakness, and involuntary movements.
- Extrapyramidal motor system
extrapyramidal motor system n. Any of the various brain structures affecting bodily movement, excluding the motor neurons, the motor cortex, and the pyramidal tract, and including the corpus striatum, its substantia nigra and subthalamic nucleus, and its connections with the midbrain.