1. plural of coma: states of deep unconsciousness from which a person cannot be awakened
Usage: medical
2. plural of coma: the bright clouds of gas and dust surrounding the nucleus of a comet
Usage: astronomy

Examples

• The hospital had three patients in comas after the accident.
• Doctors monitored the brain activity of patients in medically induced comas.
• The family waited anxiously for their loved one to emerge from one of the deepest comas the doctors had seen.
• Astronomers observed the bright comas of several comets through their telescopes.
• The comas of the approaching comets became visible as they neared the sun.
• Scientists studied the composition of gases within the comets’ comas.