[jahy-roh-kuhm-puh s] /ˈdʒaɪ roʊˌkʌm pəs/
a navigational containing a rotor, that, when adjusted for the latitude and speed of the vessel or aircraft, indicates the direction of true north along the surface of the earth or communicates this information to one or more gyro repeaters.
(nautical) a nonmagnetic compass that uses a motor-driven gyroscope to indicate true north Sometimes shortened to gyro
[jahy-ruh-kop-ter] /ˈdʒaɪ rəˌkɒp tər/ noun 1. .
/ˈdʒaɪrəʊˌdaɪn/ noun 1. an aircraft that uses a powered rotor to take off and manoeuvre, but uses autorotation when cruising
[jahy-roh-free-kwuh n-see] /ˈdʒaɪ roʊˌfri kwən si/ noun, plural gyrofrequencies. Physics. 1. the of rotation of an electron or other charged particle in a magnetic field, directly proportional to the charge of the particle and to the field strength and inversely proportional to the mass of the particle.
[jahy-roh] /ˈdʒaɪ roʊ/ noun, Aeronautics. 1. (def 3). noun 1. another name for artificial horizon (sense 1)