Which prefix would you use to denote something that is "across" or "through"?

The prefix that denotes something as "across" or "through" is "trans-." This prefix is derived from Latin and is commonly used in various medical and scientific terms. For example, "transfusion" refers to the process of transferring blood across from one person to another, and "transdermal" indicates something that is administered across the skin. Understanding prefixes is essential in medical terminology because they often provide important clues about the meaning of a word, particularly in the context of anatomy, physiology, and procedures.

The other prefixes listed have different meanings: "ab-" typically means away from, "re-" suggests again or back, and "ante-" indicates before or in front of. These distinctions are crucial in medical language to ensure accurate communication about conditions, treatments, and anatomical locations.