(a.) Turning or rotating the plane of polarization towards the left; levogyrate, as levulose, left-handed quartz crystals, etc.

a rebours a reculons against the grain anticlockwise arear around ass-backwards astern away back backward backwards clockwise earthward fro head over heels heavenward heels over head hindward hindwards homeward in a circle in a spin in a whirl in circles in reverse landward larboard leeward left left-hand left-wing left-wingish leftward levorotatory liberal near nigh port radical rearward rearwards retrad rightward round round about round and round seaward sinister sinistral sinistrocerebral sinistrocular sinistrogyrate sinistrorse widdershins windward