off-board

[ awf-bawrd, -bohrd, of- ]

adjective

, Stock Exchange.

1. outside of a major exchange, as over the counter or between private parties:

   an off-board transaction.

Word History and Origins

Origin of off-board¹

First recorded in 1945–50

Example Sentences

It will also lift a rule that requires omnibus account holders, such as asset management firms and brokerages, to report on transaction details of each final investor within two days of settlement, as well as open up most of off-board trading to foreigners.

From Reuters

Incredibly for those of us who were first drawn to the game by the excitement and spectacle of the time, this year marks the 50th anniversary — a full half-century — of Bobby Fischer’s epic run to the world chess title, culminating in the on- and off-board drama of Bobby’s defeat of star-crossed Soviet world champion Boris Spassky in Reykjavik, Iceland.

From Washington Times

I would call them mobile sensor suites that have computational capability, not only on-board, but to your point, off-board as well.

From The Verge

Most of that is done off-board.

From The Verge

Bus fares are the same as on Metrobus and will be paid off-board.

From Washington Post