Reiki

Reiki is a Japanese word composed of two kanji: 'rei' (霊), meaning 'spirit, miraculous, divine', and 'ki' (気), meaning 'energy, life force, breath'. While the word itself has ancient roots in Japanese language and philosophy, its modern association as a name primarily stems from the spiritual healing practice developed by Mikao Usui in the early 20th century. The practice of Reiki involves channeling universal life energy for healing, and thus the name carries connotations of spiritual power, healing, and well-being.

As a given name, Reiki is relatively rare outside of Japan and is often chosen by parents who are practitioners or admirers of the healing art. Its unisex nature in English-speaking countries is due to its origin as a concept rather than a traditional personal name with established gender associations. In Japan, while it can be used for either gender, it is more commonly encountered as a word or concept than a personal name.