The spelling of the word "GCTEA" can be explained using the International Phonetic Alphabet (IPA) transcription. The word is spelled as /dʒiːsiːtiːiːeɪ/, with the letter "G" pronounced as the letter "J". The letters "C" and "T" are pronounced separately in the word. The vowels "E" and "A" are both pronounced as long "I" sounds. This unusual spelling may be challenging for those unfamiliar with the pronunciation of the word.