tlanextia.

Headword: 
tlanextia.
Principal English Translation: 

to emit light, to shine

Susanne Klaus, Uprooted Christianity: The Preaching of the Christian Doctrine in Mexico, Based on Franciscan Sermons of the 16th Century Written in Nahuatl (Bonn: Bonner Amerikanistische Studien e. V. c/o Seminar für Völkerkunde, Universität Bonn, 1999), 243.

IPAspelling: 
tɬɑneːʃtiɑ
Alonso de Molina: 

tlanextia. ni. (pret. onitlanexti.) resplandecer, luzir o relumbrar.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 128v. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

techtlanextiliz techtlauiliz = he will enlighten us (Sahagún, sixteenth century, Mexico City)
Susanne Klaus, Uprooted Christianity: The Preaching of the Christian Doctrine in Mexico, Based on Franciscan Sermons of the 16th Century Written in Nahuatl (Bonn: Bonner Amerikanistische Studien e. V. c/o Seminar für Völkerkunde, Universität Bonn, 1999), 243.