Rotating in the same direction as the Earth i.e. anticlockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "cyclonic" in a sentence
"The difference between the two culminated in a disturbance which might aptly be called cyclonic, for Sempland on nearly the first occasion that he had been permitted to leave the hospital had repaired to Fanny"
"Modern science shows that all storms are cyclonic, that is, are circular eddies of wind of greater or less diameter."
"Mr. Payton had felt inclined to read his "cyclonic" young daughter a lecture, but the sight of her bright young face completely disarmed him, and he could only breathe a prayer of thankfulness that she was safe."