adjective /kɪˈmɛɹɪk,kaɪˈmɛɹɪk/
a) Like a chimera.
Application of the technology for producing chimeric mice has given considerable insight into the way intestinal crypts are organized.
b) Imaginary, fanciful.
Chimeric embryos are made by injecting cells or genetic material from one species into the embryo of another.
Wikipedia foundation.