1 rare Having or involving two sides, especially right and left or opposing sides; involving or affecting both sides, especially of the body. Compare "bilateral".
2Capable of using either the right or left hand (or foot) to perform skilled tasks.
Designating or relating to a kinship system in which an individual may claim membership of either the mother's or the father's lineage group, or both.
Early 19th century. From ambi- + lateral.