Abbreviation of Yogyakarta, a special region of Indonesia.

(African-American Vernacular) Alternative spelling of yo (non-rhotic pronunciation of your)

(slang) A greeting similar to hi. / (slang) An interjection similar to hey. / (slang) An expression of surprise or excitement. / (military slang) Present! Here!

(Baltimore) third-person singular, familiar

The letter Ё, ё.

(computing, slang) The condition of having repeated intermittent failures, such that the system alternates between being up and down.

(medicine) The reflux of urine from one moiety of the kidney down the ureter and up into the other moiety, instead of draining into the bladder.

(astronautics) One of the weights unreeled from a spacecraft during yo-yo despin to reduce the spacecraft's rotation rate.

(aviation, military) A dogfighting maneuver used to increase the closure rate of the attacker during a turn, involving the attacker temporarily giving up some altitude to simultaneously increase airspeed and allow them to turn more steeply, enabling the attacker to cut across the defender's turn and catch up with the defender.

plural of high yo-yo