This is the 446th most frequent Spanish word.
máxima
A principle, rule, or saying.
The word 'máxima' here functions as a noun, meaning 'a principle or rule of conduct', representing a concise expression of a general truth or principle.
En la reunión, el directivo compartió una máxima para el éxito: perseverancia.
In the meeting, the executive shared a maxim for success: persistence.
In this instance, 'máxima' is used as an adjective, complementing 'velocidad', which means 'maximum allowed' or 'highest permissible' concerning speed.
Conduzca a la velocidad máxima permitida para su seguridad.
Drive at the maximum allowed speed for your safety.
The word 'máxima' here is used as an adjective, modifying 'temperatura', meaning 'maximum'. It describes the highest degree of temperature attained during the day.