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isn't that the spanish for BCC (used in headlines of email and the meaning is: blind carbon copy???)
--212.129.173.6 20:33, 14 February 2007 (UTC)[reply]
from Ontology (information science): "CCO and GexKB[27] are Application Ontologies (APO) that integrate diverse types of knowledge with the Cell Cycle Ontology (CCO) and the Gene Expression Knowledge Base (GexKB)"
from Advanced Chess: "The world's largest organization for Advanced Chess on the Internet is the Advanced Chess Organization - CCO (this organization used to be known as Computer Chess Organization, and therefore kept the acronym CCO for historical reasons)." --Beleg Tâl (talk) 14:19, 2 December 2014 (UTC)[reply]