The spelling of the word "Emquadrat" can be explained through its IPA phonetic transcription: /ɛmkwɑdræt/. The first syllable "Em" is pronounced as "em" with the schwa sound. The second syllable "quad" is pronounced with a short "a" sound followed by "kwad". The final syllable "rat" is pronounced with a short "a" sound followed by "rat". Therefore, the spelling of this word is derived from its phonetic sounds and is spelled as "Emquadrat."