Definitions

1. noun

A diagram or drawing that uses partial shading to represent various levels of detail or to suggest volume.

“The architect used a sciagraph to convey the scale of the proposed building.”

2. noun

A drawing or diagram made with a pencil and varying degrees of shading, used to suggest the volume or shape of a solid object.

“The student’s sciagraph of the cube demonstrated a good understanding of three-dimensional geometry.”