plural of elliptic spring

(mechanical engineering, automotive) A curved leaf spring of different styles.

Alternative form of semielliptical

plural of elliptical trainer

An exercise machine in which the feet of the user travel an elliptic path; used to simulate stair climbing, walking, or running without causing excessive pressure to the joints.

plural of elliptic curve

(cryptography) A branch of public-key cryptography in which elliptic curves are used to generate key pairs.

plural of bi-elliptic transfer

(astronautics) A type of movement of a spacecraft from one orbit to another, in which the spacecraft first raises its apoapsis to an extremely high altitude, then, at the new, higher, apoapsis, performs an engine burn to change its periapsis to that of the desired orbit, and, finally, upon reaching the new periapsis, performs a third burn to lower the eccentricity of its orbit and circularize in the desired orbit, or performs these steps in reverse to move from a higher to a lower orbit.