Abbreviation of Yogyakarta, a special region of Indonesia.

(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.

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

(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.

(astronautics) A method of reducing the rotation rate of a rapidly-spinning spacecraft by unreeling a pair of weights from the spinning spacecraft, greatly increasing the spacecraft's moment of inertia and transferring most of the spacecraft's angular momentum to the weights.

plural of yo-yo weight