1. The last letter of the Greek alphabet, as alpha is the first: hence Alpha and Omega, the first and the last.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• omage,
• omga,
• omeag,
• omedy,
• mega,
• omeaga,
• imege,
• megga,
• ommega,
• omaga,
• omagah,
• omeg,
• amiga,
• amego,
• omgea,
• megar,
• omaba,
• emege,
• meaga,
• omagh

• omega-3,
• omega-6.

The adjective form of the word "omega" is "omegan" or "omegic".

The plural of the "omega" can be the "omegas".

The singular of the "omega" can be the "omega".