Sentence:  As he applied the applicator extending from the machine - which consisted of seven differently colored neon tubes superimposed on a <WSD>rectangular</WSD> base - to the supposedly diseased portions of Mrs. Shaefer 's body , Lee kept up a steady stream of pseudo scientific mumbo-jumbo . 
Meaning of the word marked with <WSD> tags:  having a set of mutually perpendicular axes; meeting at right angles