pol·y·am·o·ry 
(pŏl′ē-ămə-rē)
(pŏl′ē-ămə-rē)n.
The fact or practice of being romantically or sexually involved with more than one person with the knowledge and consent of all parties.
[POLY- + Latin amor, love; see AMOROUS + -Y2.]
pol′y·amo·rous adj.
- lineally
- lineament
- linear
- Linear A
- linear accelerator
- linear algebra
- Linear B
- linear combination
- linear dependence
- linear equation
- linear independence
- linearity
- linearization
- linearize
- linearly
- linear measure
- linear momentum
- linear perspective
- linear transformation
- lineation
- linebacker
- linebacking
- line breeding
- linecaster
- linecasting