Relating to, affected by, or characterized by a coma; in a state of unconsciousness or deep unresponsiveness.
From coma + -ous (suffix forming adjectives meaning 'full of' or 'characterized by'). This is an older or alternative form of comatose.
Both 'comatous' and 'comatose' exist, but 'comatose' became the standard medical term while 'comatous' faded—it's like how 'television' won out over alternative names, even though multiple forms started equally.
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