The spelling of the word "Abranchian" follows the rules of English phonetics. It starts with the sound "a" as in "cat" represented by the IPA symbol /æ/. Then, it has the sound "br" as in "bridge" represented by the IPA symbol /br/. The next sound is "an" as in "can" represented by the IPA symbol /æn/. Finally, it ends with "chian" as in "Christian" represented by the IPA symbols /tʃiən/. Altogether, the spelling of "Abranchian" is a reflection of how it is pronounced in English.