"Dexuma" is a made-up word that does not correspond to any existing English word. However, if we were to spell it phonetically using the International Phonetic Alphabet (IPA), it would be transcribed as /dɛksuːmə/. This would indicate that the word is pronounced with a short "e" sound for the "e" in "dex," an "s" sound for the "s" in "dex," a long "u" sound for the "u" in "uma," and a schwa sound for the final "a" in "uma."