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.
clinical. 1  1. pertaining to a clinic or to the bedside and therefore carried out on the living animal. 2  2. pertaining to or founded on actual observation and treatment of patients, as distinguished from theoretical or experimental. 3  3. productive of clinical signs; thus clinical disease as distinct from subclinical. clinical data storage storage of clinical data about patients; may be paper or computerized.