clockwise vs dextrorotatory

clockwise

adj
  • Moving clockwise; having rotary motion in the manner of a clock. 

adv
  • In a curve or twist corresponding to the movement of the hands of a clock. 

dextrorotatory

adj
  • That rotates the plane of polarized light to the right, or clockwise. Notation: (+) or formerly lowercase d-. 

How often have the words clockwise and dextrorotatory occurred in a corpus of books? (source: Google Ngram Viewer )