one of the three major groups (called Domains) of life on Earth. It comprises all the eukaryotes, organisms that have a nucleus and discrete organelles in their cells, such as animals, plants and fungus. The other two Domains are Bacteria and Archaea.
The phylogenetic domain containing all eukaryotic organisms. ... (09 Oct 1997) ... 
the domain of life that includes all unicellular and multicellular organisms with cells that contain membrane-bound nuclei and organelles