The phrase "unique characteristics" refers to the distinct qualities or traits that set someone or something apart from others. It means there is something special or different about them that makes them stand out. Full definition
Your attorney will understand the many unique characteristics of the motorcycle accident, as well as the chance of existing bias on the part of the police officer and jury. (citywidelaw.com)
Every commodity has its own unique characteristics in terms of what factors does it get affected by and how much. (adigitalblogger.com)
Land use, however, is controlled at the local level in environments with unique characteristics across urban, agricultural and a multitude of other settings. (scientificamerican.com)