Crossword clues for the word: OXYGENATION The word OXYGENATION has appeared as an answer to at least 2 crossword clues on different crossword puzzles. Crossword clues for OXYGENATION Showing 1 to 2 of 2 results Clue(s) Photosynthetic process "inflating" 16-, 24-, 46- and 56-Across What blood undergoes in the lungs