Today's Word of the Day means...
rotation ro·ta·tion (rō-tā'shən)n.
The act or process of turning around a center or an axis.
Regular and uniform variation in a sequence or series, as in the recurrence of symptoms of a disease.
The motion of an object around an internal axis.
A single complete cycle of such motion. See Note at revolution.
A transformation of a coordinate system in which the new axes have a specified angular displacement from their original position while the origin remains fixed.