Etymology From Middle English oftaken, equivalent to off- + take.
1
To take off; take away, remove.
Of brothers and bairns, where the brightest of earth-joys She had hitherto had: all the henchmen of Finn War had offtaken, save a handful remaining, […]1892, Beowulf: An Anglo-Saxon Epic Poem, page 38:
In this case also we are not informed what the range of water depths was; but, since all distributaries offtaking from this sixty-three miles length of canal were closed during the experiment, and since the capacity of the canal at the lower end was not more than half the capacity at its upper end, we know at least that the water stream must have been very shallow at the upper end of the length of canal under experiment.1917, Proceedings - West Pakistan Engineering Congress, volume 5, page 5:
1 more example
This canal offtook from the River Jumna, near its exit from the Sivalik Hills and flowed a distance of about 200 miles to the Fort of Hansi and the town of Hissar, on the borders of the Rajputana Desert.1922, Industrial India, volume 2, page 119:
2
Business, Finance To take out or remove commodities from a market, usually through purchasing them.
Obviously, it would be desirable for the parties to the interim offtake agreement to offtake their physical volumes in proportion to their dividend participation.1973, Multinational Corporations and United States Foreign Policy: