furan - a colorless toxic flammable liquid used in the synthesis of nylon. furane, furfuran. organic compound - any compound of carbon and another element or a radical. nitrofuran - derivative of furan used to inhibit bacterial growth.
precarious adjective. âº in a âdangerous âstate because of not being âsafe or not being âheld in âplace âfirmly: The âlorry was âlodged in a very precarious way, with âits âfront âwheels âhanging over the âcliff.
Pre-Existing Conditions. A pre-existing condition is a medical condition, such as an illness or injury, that you have before you join a health plan. Before 2014, people with a pre-existing condition often had difficulties getting insurance on their own.