balanced polymorphism n.
A system of genes in which two alleles are maintained in stable equilibrium because the heterozygote is more fit than either of the homozygotes.
- Balanced rudder
a rudder so designed that the center of water pressure on the forward face, when turned, lies about halfway along the length, minimizing the turning effort required.
- Balanced sentence
a sentence consisting of two or more clauses that are parallel in structure. Historical Examples A balanced sentence consists of two parts, the one corresponding to the other. Elementary Guide to Literary Criticism F. V. N. Painter noun in grammar, a sentence with two clauses or phrases of fairly equal in length and strength for […]
- Balanced step
any of a series of staircase winders so planned that they are nearly as wide at the inside of the stair as the adjacent fliers.
- Balanced ticket
a slate of candidates chosen to appeal to a wide range of voters, especially by including members of large regional, ethnic, or religious groups.