This is the 537th most frequent Spanish word.
tiempos
"Times" or "weather" (depending on context).
Here, 'tiempos' refers to a general historical or past period.
En aquellos tiempos, las cosas eran más sencillas.
In those times, things were simpler.
In this context, 'tiempos' is used to denote the durations or periods associated with stages of an experiment.
El profesor nos pidió calcular los tiempos de cada etapa en el experimento.
The teacher asked us to calculate the times for each stage in the experiment.
Here, 'tiempos' relates to grammatical tenses used in language structure.