Prismatic

An object (or section of an object) is prismatic if its cross-sectional dimensions are constant in a specified direction.

Resonator examples —

1. A cylindrical resonator is prismatic if its diameter is constant in the direction of the stud axis.
2. An unslotted bar horn is prismatic if its width and thickness are constant in the direction of the stud axis. (Slotted horns cannot be prismatic because of the slots.)
3. A disk is prismatic if its thickness is constant along the radius.

Prismatic cylinder Prismatic bar

Figure 1. Prismatic resonators (stud axis parallel to length dimension)

Also see unshaped horn.