tutor (plural tutors) 1  One who teaches another (usually called a student, learner, or tutee) in a one-on-one or small-group interaction. ( 2 Britain) A university officer responsible for students in a particular hall. ( 3 obsolete) One who has the charge of a child or pupil and his estate; a guardian.
The accumulation of fluid in the pleural space, referred to as a pleural effusion, usually indicates an underlying abnormality. A thoracentesis may be performed to identify the reason (diagnostic) and/or to relieve the discomfort and symptoms (therapeutic) of excessive fluid in the pleural space. A diagnostic thoracentesis involves the removal of fluid for analysis (pleural fluid analysis).
Definition of PERISTALSIS. : successive waves of involuntary contraction passing along the walls of a hollow muscular structure (as the esophagus or intestine) and forcing the contents onward.See peristalsis defined for kids.ADVERTISEMENT. successive waves of involuntary contraction passing along the walls of a hollow muscular structure (as the esophagus or intestine) and forcing the contents onwardâcompare segmentation 2.