The spelling of the word "meraz" is derived from its pronunciation. The IPA phonetic transcription of this word is /məˈræz/. The initial "m" sound is voiced, followed by a schwa sound in the middle of the word. The letter "r" is pronounced with a flap sound, and the vowel sound "a" is pronounced in a short form. The last letter "z" is pronounced with a voiced fricative sound. Therefore, this word is spelled as "meraz" based on its distinct sounds in pronunciation.