unicameral

Although, actually, Nebraska is exactly like Kansas, except it has a unicameral legislature.

Nebraska, with its unicameral legislature, would be an exception.

Unicameral, ū-ni-kam′e-ral, adj. consisting of but one chamber, of a legislative body.

In structure it represents a curious cross between the principles of unicameral and bicameral organization.

Paine frankly retracts an old opinion of his own, that the legislature should be unicameral.

Character and powers of Congress; congress versus president; experiments with unicameral legislatures.

Franklin suggested the adoption of a unicameral legislature, but does not seem to have made any struggle for it.