A chromosome with a centrally placed centromere that divides the chromosome into two arms of approximately equal length. ... (05 Mar 2000) ... 
Type: Term Definitions: 1. a chromosome with a centrally placed centromere that divides the chromosome into two arms of approximately equal length.
Metacentric chromosome: A chromosome with arms of equal length.
[n] - a chromosome having two equal arms because the centromere is in median position
noun a chromosome having two equal arms because the centromere is in median position