unborn child/unborn children

do not use these oxymorons. "The phrase 'unborn children' is a misuse of two words with clearly accepted meanings. Because of the meanings of the two constituent words, 'unborn children' is a logical impossibility, just like the phrase 'round squares.' 'Children' are young human beings from the ages of perhaps two to eighteen. A human fetus that has the potential to continue to develop to the point of birth and, subsequently, to the age at which we would use the word child (rather than newborn or baby or infant or toddler) is not a child. It cannot—logically cannot—be any kind of a child, including an unborn child" (Andrew S. Ryan, Jr., in Free Inquiry, June/July 2013).