Definition of "omega" []

• The 24th letter of the Greek alphabet. See Table at alphabet. (noun)
• The end. (noun)
• See omega baryon. (noun)
• See omega meson. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Fish that are rich in omega-3s and are low-risk include salmon, shrimp, canned light tuna (limit white tuna to 6 ounces a week), sardines, pollock, catfish and tilapia."
• "Fish (and fish oil) lovers weighing these questions on a personal level can help by choosing sources that are fished or farmed responsibly, that are high in omega-3s and low in environmental contaminants."
• "Foods high in omega-3 fatty acids prevent men from sudden death of a heart attack, according to the American Dietetic Association."