2. Prefix. intermediate ¹
¹ Source: wiktionary.com
Medical Definition of Meso-
1. Mes- 1. Middle, mean, intermediacy. 2. A mesentery, mesentery-like structure. 3. A prefix denoting a compound, containing more than one chiral centre, having an internal plane of symmetry; such compounds do not exhibit optical activity (e.g., meso-cystine). Origin: G. Mesos (05 Mar 2000)