Former designation of Nelarabine; a chemotherapy prodrug used in treatment of T-cell acute lymphoblastic leukemia.

(athletics) A long-distance running race over 5000 metres.

(US, slang) gone; departed from a place

(sports) An equal number of wins and losses.

plural of 50K

(athletics) A 50 kilometer race.

plural of 501(c)(3)

(US, taxation, organizations) An organization that complies with section 501(c)(4) of the U.S. federal tax code. A non-profit organization exempt from some federal income taxes, due to being dedicated social welfare purposes.

(US, taxation, organizations) An organization that complies with section 501(c)(3) of the U.S. federal tax code. A non-profit organization exempt from some federal income taxes, due to being dedicated to charitable, religious, educational, scientific, public safety, promotion of amateur sport at the national or international level, prevention of cruelty to women or children or animals, or literary purposes.

plural of 501(c)(4)