As most of us know by now, yogash citta-vRtti-nirodhaH.
And, the vRtti-s are: pramaaNa-viparyaya-vikalpa-nidraa-smRtayaH (plural of smRtiH, because last component of a dvandva of more than two words). As a corollary, or whatever, one might, rather playfully also write: tato yogaH smRti-nirodho 'pi. (Without sandhi: tataH; yogaH smRti-nirodhaH; api.) In English, something like: Thus, yoga is also nirodha of memory! :o
