The word "PURCH UI" is spelled as /pɜːtʃ juː aɪ/. The first syllable "PURCH" is pronounced with a long "ur" sound (like in "bird") followed by a "ch" sound. The second syllable "UI" is pronounced as "you-eye". The spelling of the word indicates that it may be a combination of two words, "PURCH" and "UI", with the latter possibly standing for "user interface". The specific context in which the word is used will provide more clarity on its meaning.