Definition: The highest taxonomic category into which living forms are classified, comprising Monera (bacteria and blue-green algae), Protista (protozoa and eukaryotic algae), Fungi (fungi), Plantae (plants), and Animalia (animals).
[A.S. cyningdom, fr. cyning, king, + -dom, state, condition]
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Examples: glitazone, GI cocktail, etc.