A fluid that reduces friction within the pericardium by lubricating the epicardial surface, allowing the membranes to glide over each other with each heartbeat.

plural of flue pipe

An organ pipe that produces sound through the vibration of air molecules, contrasted with reed pipe.

A phenothiazine derivative that is an antidepressant with sedative effects.

(quantum mechanics) A momentary fluctuation in the energy at a point in space due to the Heisenberg uncertainty principle

(inorganic chemistry) carbon monofluoride

(anatomy) A transparent, viscous, non-Newtonian lubricating fluid which is found in the cavities of synovial joints or bursae and secreted by the synovial membrane; its main purpose is to reduce friction between the articular cartilage of synovial joints during movement.

The removable, light-emitting part of a fluorescent lamp

(colloquial) cerebrospinal fluid

(colloquial) cerebrospinal fluid