When an engine is ignited, it produces thrust and boosts the rocket into the sky. After the propellant is used up, delay is activated, producing tracking smoke and allowing the rocket a brief coast.
infirmary (plural infirmaries) 1  A place where sick or injured people are cared for, especially a small hospital; sickhouse. 2  A clinic or dispensary within another institution.
Pneumonia: The Scourge of Animal Populations. Pneumonia means inflammation of the lungs. Inflammation is a normal bodily response to anything foreign that enters the body or disturbs cells; it is actually part of the bodyâs defense system and healing process.