In reference to these matters of chirality, besides the already mentioned dextro- for right, for which the OED gives these examples:
dextrogyre /ˈdɛkstrəʊdʒaɪə(r)/ a. L. gȳrus, Gr. γῠρος circuit, gyrating or circling to the right. dextroˈgyrate a. L. gyrāt-us, pa. pple. of gȳrāre to wheel round, characterized by turning the plane of polarization to the right, as a dextrogyrate crystal. dextroˈgyrous a. = dextrogyre. dextro-roˈtation, rotation to the right. dextro-ˈrotatory a., having or producing rotation to the right; dextrogyrous.
The OED also attests sinistro- for left:
sinistro- /ˈsɪnɪstrəʊ/, used as combining form of sinister, in the sense ‘on, situated in, directed or turning towards the left’, as sinistro-cerebral, -gyrate, -gyric adjs.; sinistro-sacrad adv.
- 1803 J. Barclay New Anat. Nomencl. 174 ― The position of the heart in the thorax;··we may say its direction from the mesial plane is sinistrad and sacrad, or sinistro-sacrad.
- 1885 Proc. Soc. Psychol. Research III. 43 ― The replacement of some sinistro-cerebral by some dextro-cerebral centre of sight or speech.
- 1887 Amer. Jrnl. Psychol. I. 194 ― All movements of the hand··from right to left are sinistrogyric.
- 1898 Daily Graphic 16 Feb. 9/4 ― The writing··was sinistrogyrate, or centrifugal.
I for one will definitely be incorporating sinistrogyrate into my daily discourse, giving all three of counterclockwise, anticlockwise, and widdershins a well-deserved rest. :)