I suggest starting with these online reference collections. But below there are titles of individual encyclopedias and dictionaries ... and links to some of them.
First published by the International Chamber of Commerce in 1936, Incoterms® rules provide internationally accepted definitions and rules of interpretation for most common commercial terms used in contracts for the sale of goods. Online, there are only extracts of the definitions.
Understanding American business jargon: a dictionary by W. Davis Folsom