Definition of "mix in" []

• Cause (something) to be mixed with (something else) (verb)
• Add as an additional element or part (verb)

WordNet. Princeton University. 2010.

• ""We're showing a three percent saltwater mix in the meteorite shaft, which contradicts the glaciology report that the meteorite was encased in a pristine freshwater glacier.""
• "The distaste with which, as appears from more than one of his letters, he was disposed to view the personal, if not the political, attributes of what is commonly called the Radical party in England, shows how unsuited he was naturally to mix in that kind of popular fellowship which, even to those far less aristocratic in their notions and feelings, must be sufficiently trying."
• "The ethnic religious mix in Pennsylvania was particularly volatile because the militant Scotch-Irish who began to arrive in great numbers after 1728 and numbered 100,000 by 1754 despised the pacifist Quakers and German Pietists."