I know what an Integral Tender is, because I was there during EI. I was talking today to someone who asked "why don't we use the term "Complete?" I scratched my head, and began searching. The closest I could find was in the CME Group, where there is the term "All-or-None"
https://www.cmegroup.com/clearing/trading-practices/all-or-none.html Trading Practices: All-Or-None Orders - CME Group All-or-None (AON) orders are orders executed in the open outcry venue that must be filled in their entirety at a single price. AON transactions are permitted only in certain products and must be for a quantity that meets or exceeds the exchange-specified AON minimum quantity for that product.
www.cmegroup.com And also this (which has a nice discussion of the effects fo such tenders):
https://www.investopedia.com/terms/a/aon.asp SO why don't we use the term All-or-None All Or None (AON) Definition - Investopedia All or none (AON) is an order type with the instruction to fill the order completely or cancel it; partial fills are not allowed. AON orders usually take longer to execute than normal orders ...
www.investopedia.com