1) Growing luxuriantly 
A term used to indicate that the growth of a bacterial culture is rapid and relatively luxuriant; used especially in reference to the growth of cultures of the human tubercle bacillus (Mycobacterium tuberculosis). ... See: dysgonic. ... Origin: G. Eugonos, productive, fr. Eu, well, + gonos, seed, offspring ... (05 Mar 2000) ... 
(u-gon´ik) growing luxuriantly; said of bacterial cultures.
Type: Term Pronunciation: yū-gon′ik Definitions: 1. A term used to indicate that the growth of a bacterial culture is rapid and relatively luxuriant; used especially in reference to the growth of cultures of the human tubercle bacillus (Mycobacterium tuberculosis).
thriving on artificial media, as certain bacteria (opposed to dysgonic).