oren·da n. /'ͻ:rεndɘ/: is the Iroquois name for the invisible collective spiritual energy believed to be a vital force forming part of all objects, animate and inanimate. Known as prana (prāṇa; the Sanskrit word for breath, "life force", or "vital principle") by the Hindus and qi or ch'i (气; pinyin: qì) by the Chinese.