a structure composed of two molecular layers, especially of phospholipids in cellular membranes.
bolection. noun another word for bolection
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.