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Definition of Ambystoma
1. Noun. Type genus of the Ambystomatidae.
Exact synonyms: Genus Ambystoma
Generic synonyms: Amphibian Genus
Group relationships: Ambystomatidae, Family Ambystomatidae
Member holonyms: Ambystomid, Ambystomid Salamander
Generic synonyms: Amphibian Genus
Group relationships: Ambystomatidae, Family Ambystomatidae
Member holonyms: Ambystomid, Ambystomid Salamander
Medical Definition of Ambystoma
1. A genus of the ambystomatidae family. The best known species of this genus are the axolotl forms ambystoma mexicanum and ambystoma tigrinum. They may retain gills and remain aquatic without developing all of the adult characteristics. However, under proper changes in the environment they metamorphose. (12 Dec 1998)