a small and faint southern constellation (the Chameleon), close to the south celestial pole.
(as genitive Chamaeleontis /kəˌmiːlɪˈɒntɪs/) used with preceding letter or numeral to designate a star in this constellation:the star Delta Chamaeleontis
Origin:
from Greek
Chamaeleon in other Oxford dictionaries
Definition of Chamaeleon in the US English dictionary