flat-compoundedadj. [compoundv. 2f] Electrical Engineering (see quot. 1940 ).
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1909 Webster's New Internat. Dict. Eng. Lang. 828/1Flat-compounded.
1940 Chambers's Techn. Dict. 339/1Flat-compounded, said of a compound-wound generator the series winding of which has been so designed that the voltage remains constant at all loads between no-load and full-load.