ĪXĀIZTĀC possessed form, prefixed with third person singular possessive Ī- someone pale, pallid / pálido (Z) [(2)Zp.93,163]. This appears to be a reduction of ĪXĀYACIZTĀC. Z only marks the vowel of the second syllable long in one of two attestations. See XĀYAC(A)-TL, IZTĀC. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 110.