in ixquichica.

Headword: 
in ixquichica.
Principal English Translation: 

while, or in the meantime, during the time up until

Orthographic Variants: 
inixquichica
Alonso de Molina: 

inixquichica. mientras, o mientrasque, o entre tanto.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 39r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

"ye mochi chicopoua xiuitl ypan matlactli xiuitl yxquichica axca" = already all of 150 years in the time up to (i.e. before) now. (SW)
Codex Quetzalecatzin, in the Library fo Congress, https://www.loc.gov/resource/g4701g.ct009133/

themes: 
Time, Calendar, Frequency