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late 14c., "making or becoming pregnant," from Old French impregnacion, from Late Latin impregnationem (nominative impregnatio), from impraegnare (see impregnate).
impregnate im·preg·nate (ĭm-prěg'nāt)
v. im·preg·nat·ed, im·preg·nat·ing, im·preg·nates
To make pregnant; to cause to conceive; inseminate.
To fertilize an ovum.
To fill throughout; saturate.