| baseball | A competitive nine-member team sport including softball. (12 Dec 1998) |
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| baseball coil | <radiobiology> Used in magnetic-mirror geometries to produce a minimum-B configuration, so-called because of their resemblance to the characteristic shape of stitches on a baseball. (09 Oct 1997) |
| baseball elbow | An epicondylitis of the medial epicondyle at the origin of the flexor muscles of the forearm; related to throwing and usually seen in children or adolescents. (05 Mar 2000) |
| baseball finger | An avulsion, partial or complete, of the long finger extensor from the base of the distal phalanx. Synonym: drop finger, hammer finger, mallet finger. (05 Mar 2000) |