analogue

also an·a·log (ănˈə-lôgˌ, -lŏgˌ)

1. Something that bears an analogy to something else: Surimi is marketed as an analogue of crabmeat.
2. Biology An organ or structure that is similar in function to one in another kind of organism but is of dissimilar evolutionary origin.
3. Chemistry A structural derivative of a parent compound that often differs from it by a single element.

1. often analog Of, relating to, or being a device in which data are represented by continuously variable, measurable, physical quantities, such as length, width, voltage, or pressure.
2. often analog Computer Science Of or relating to an analog computer.