The spelling of "art bottom of" is phonetically spelled as /ɑːt ˈbɒtəm əv/. The first sound, /ɑːt/, is the long a sound as in "car" or "bar". The next sound, /ˈbɒtəm/, uses the phonetic symbol for the short o sound in English, and the last sound, /əv/, represents a schwa sound similar to the "u" in "but". Overall, the spelling accurately represents the pronunciation of the three words combined.