HOSA Dental Terminology Practice 2026 – All-in-One Study Guide for Exam Success!

The term Gy in radiation terminology stands for Gray, which is a unit of measurement used to quantify the absorbed dose of ionizing radiation. Specifically, one Gray is defined as the absorption of one joule of radiation energy per kilogram of matter. This measurement is crucial in fields such as medicine and radiation safety, as it helps assess the amount of radiation that tissues and organs receive, thereby facilitating the evaluation of potential biological effects and damage.

In contrast, the other options do not accurately reflect the correct definition of Gy. Grayscale Yield refers to a concept in imaging, while Group yield factor and General yield of radiation are not standardized terms recognized in radiation measurement. Hence, the correct answer appropriately identifies Gray as the standard unit of radiation dose measurement.