The definition of prejudicial is something that causes harm or damage, or is detrimental.
When a person is on trial for a crime, information indicating that he has previously committed similar crimes is an example of prejudicial information.
- Causing or tending to cause harm, especially to a legal case: a prejudicial error.
- Showing or full of prejudice; biased: a prejudicial opinion.
- Being taken to represent useful and Rt, prejudicial resistances.
- Upon the outbreak of the American Civil War in 1861, Lord Palmerston acknowledged that it was the duty of the British government to stand aloof from the fray; but his own opinion led him rather to desire than to avert the rupture of the Union, which might have been the result of a refusal on the part of England and France to recognize a blockade of the Southern ports, which was notoriously imperfect, and extremely prejudicial to the interests of Europe.
- Pope Alexander also extorted from the king a pledge that he would relinquish any customs prejudicial to the rights of the Church which had been introduced since his accession.
- The introduction of machinery, however, which led to the rise of the great cotton industry of Lancashire, had very prejudicial effects, and by 1839 the number of persons employed had fallen to 4622.
- For the Hexaplar text which he thus produced not only effaced many of the most characteristic features of the old version, but also exercised a prejudicial influence on the MSS.