be left; of persons, questions, problems, results, evidence, etc.; "There remains the question of who pulled the trigger"; "Carter remains the only President in recent history under whose Presidency the U.S. did not fight a war"
the metabolic processes whereby certain organisms obtain energy from organic molecules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be transported to the lungs
a single complete act of breathing in and out; "thirty respirations per minute"
respirator that produces alternations in air pressure in a chamber surrounding a patient's chest to force air into and out of the lungs thus providing artificial respiration