The word 奇门遁甲 is formed by combining four characters: 奇 (meaning mysterious or unusual), 门 (meaning gate or school of thought), 遁 (meaning to hide or evade), and 甲 (referring to the first heavenly stem in Chinese cosmology). It directly denotes a traditional Chinese divinatory system where 奇门 collectively refers to the esoteric methods or gates used for calculation, and 遁甲 specifically indicates the practice of concealing or manipulating the celestial stem 甲 within astrological and temporal frameworks to guide decisions and strategies.