The American Heritage® Dictionary of the English Language, 4th Edition
n. The 22nd letter of the Greek alphabet. See Table at alphabet.
n. The vital force believed in Taoism and other Chinese thought to be inherent in all things. The unimpeded circulation of chi and a balance of its negative and positive forms in the body are held to be essential to good health in traditional Chinese medicine.
n. The twenty-second letter of the Classical and Modern Greek alphabets, and the twenty-third letter of Old and Ancient alphabets.
The Century Dictionary and Cyclopedia
n. The twenty-second letter of the Greek alphabet, X, Χ, corresponding to the English church
n. A fish, Lavinia exilicauda: same as hitch.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the circulating life energy that in Chinese philosophy is thought to be inherent in all things; in traditional Chinese medicine the balance of negative and positive forms in the body is believed to be essential for good health