Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
x-raying is a noun meaning "obtaining images by the use of X rays". It carries one recorded sense.
obtaining images by the use of X rays
Definitions, synonyms and semantic relations for x-raying come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.