A 15-week-old giant panda born at the San Diego finally gets a name. The small male cub's new name is Yun Zi, a Chinese name meaning son of cloud. San Diego's newest baby panda was officially named Yun Zi Wednesday (November 18), which is Chinese for son of cloud. The name was selected by 28 percent of the more than 17,500 participants who voted in an online poll, the zoo announced. Yun Zi was born 100 days ago. Under Chinese tradition, panda cubs aren't given a permanent name until that period has passed.