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.
A medical quack (one who pretends to have medical expertise; a charlatan). The treatment of disease by vapors or gases, as by inhalation. A physician practicing bariatrics, the field of medicine concerned with weight loss. Surgery on the stomach and/or intestines to help a person with extreme obesity lose weight.