1. comatose -- (relating to or associated with a coma; "comatose breathing"; "comatose state")
2. comatose -- (in a state of deep and usually prolonged unconsciousness; unable to respond to external stimuli; "a comatose patient")
1.
In the hours that had passed, the fits of sleep, or the comatose condition that passed for it, had grown more frequent, so that the pauses when conversation was possible were shortened. - from Dracula by Bram Stoker