Definition of split off
: to separate or remove by or as if by splitting split some kindling off from a log where only part of the assets of the corporation are split off into a new corporation — U.S. Code split the carbon dioxide off
: to separate oneself or become separated or removed by or as if by splitting pink-tinted granite existing in clean-cleaved layers that split off true and fine — Charles Rawlings ready to split off on the slavery question — S. H. Adams —often used with from blondness splits off from long-headedness — Ruth Benedict Miami are supposed to have split off from the Chippewa — American Guide Series: Michigan
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