yes cigan means gypsy ,According to to the Wikipedia article on Soviet Space Dogs, Cigan, or Tsygan, translates to 'Gypsy'. Dezik, or Desik, is a trickier one. Some quick digging I've done indicates it may translate to 'Country' (as in from the countryside), or else 'Countryman', but this is by no means certain. An alternative possibility, assuming that it may actually be originally a Russian word of Turkish origin, is 'Dry' or else 'Parched'.