iuhcatiliztli.

Headword: 
iuhcatiliztli.
Principal English Translation: 

form of matter (see Molina)

Alonso de Molina: 

iuhcatiliztli. forma de materia.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 43v. col. 1. Thanks to Joe Campbell for providing the transcription.