The word sciagraph refers to a shadow or silhouette of an object or scene. If you are looking for synonyms for this word, there are a few options that are similar in meaning. These synonyms include shade, outline, contour, form, and shape. Each of these words describes the general shape or appearance of an object or subject without providing specific details or colors. Another possible synonym for sciagraph is the word shadowgraph, which is a similar term used to describe an image created by casting shadows onto a surface. Overall, there are many words that can be used to describe the concept of a sciagraph or shadow in different contexts.