having two levels of space, as a railroad passenger car with two tiers of seats.
(especially of a house) split-level.
a bi-level house, vehicle, etc.:
The family moved from a bungalow into a bi-level.
of, relating to, or having reference to two lines: bilinear coordinates. of the first degree in each of two variables, as an equation. adjective of or referring to two lines of or relating to a function of two variables that is linear in each independently, as f(x, y) = xy adj.
- Bilinear form
a function or functional of two variables that is linear with respect to each variable when the other variable is held fixed.
- Bilinear transformation
marked with two usually parallel lines.