X-RAY Views 1 meanings found X-RAY is an abbreviation for 0.01 to 10 nanometers (3 × 10^16 Hz to 3 × 10^19 Hz). It is mainly used in Academic & Science-related contexts. Academic & Science 0.01 to 10 nanometers (3 × 10^16 Hz to 3 × 10^19 Hz)