Chemical equations are balanced for mass and charge, meaning the number and type of atoms on the left side of the arrow is the same as the number of type of atoms on the right side of the arrow. 1  The overall electrical charge on the left side of the equation is the same as the overall charge on the right side of the equation.
Definition of overgrown for English Language Learners. : 1  covered with plants that have grown in an uncontrolled way. : 2  grown to a size that is unusually or too large.
edge. 1. a line or border at which a surface terminates: Grass grew along the edge of the road. 2. a brink or verge: the edge of a cliff; the edge of disaster. 3. any of the narrow surfaces of a thin, flat object: a book with gilt edges. 4. a line at which two surfaces of a solid object meet.