• xentre of mass,
• ventre of mass,
• fentre of mass,
• dentre of mass,
• cwntre of mass,
• csntre of mass,
• cdntre of mass,
• crntre of mass,
• c4ntre of mass,
• c3ntre of mass,
• cebtre of mass,
• cemtre of mass,
• cejtre of mass,
• cehtre of mass,
• cenrre of mass,
• cenfre of mass,
• cengre of mass,
• cenyre of mass,
• cen6re of mass,
• cen5re of mass

The adjective form of the term "centre of mass" is "center-of-mass". However, one could also use the phrase "mass-centered" to convey a similar meaning.