constructible

adjective

1. Of a land, suitable for constructing a building.

2. Of a building or other thing, capable of being constructed.

3. Allowed to construct.

4. (of a regular polygon) That can be constructed in a plane using only a pair of compasses and a straightedge.

5. (of a complex number) That the line segment joining it to the origin can be constructed using only a pair of compasses and a straightedge.