A shortened term for Integral Transform.
Geometrically, if and are two transformations, then the Similarity Transformation is sometimes called the transform (Woods 1961).
See also Abel Transform, Boustrophedon Transform, Discrete Fourier Transform, Fast Fourier Transform, Fourier Transform, Fractional Fourier Transform, Hankel Transform, Hartley Transform, Hilbert Transform, Laplace-Stieltjes Transform, Laplace Transform, Mellin Transform, Number Theoretic Transform, Poncelet Transform, Radon Transform, Wavelet Transform, z-Transform, Z-Transform
References
Woods, F. S. Higher Geometry: An Introduction to Advanced Methods in Analytic Geometry. New York: Dover, p. 5, 1961.