In ancient Egypt, immortal human substance; the concept approximates the Western idea of the spirit or soul. One of Egypt's hieroglyphs is a ka, a figure with two bent arms.(pr. kah)An example of a ka in the second sense, symbolizing the first: Egypt, Libation dish, c. 2960-2770 BCE, Dynasty 1, Archaic period, siltstone, width 5 3/4 inches (14.5 cm), length 6 7/8 inches (17.5 cm), Metropolitan Museum of Art, NY. See Egyptian art.