What does the prefix "trans-" indicate?

The prefix "trans-" indicates the meaning "across or through." It is commonly used in various medical and scientific terms to convey the idea of crossing from one side to another or moving through a barrier. For example, "transdermal" refers to medication that is administered across the skin, while "transport" involves moving substances across or through different areas. Understanding the meaning of this prefix can help in comprehending various medical conditions and procedures that involve movement or transfer across boundaries, whether they be physical, biological, or chemical.