The Spanish verb 'graduar' (to graduate) comes from Medieval Latin 'graduare' meaning 'to obtain an academic degree.' This Medieval Latin term was derived from the Classical Latin word 'gradus' meaning 'step' or 'degree.' The Spanish verb was formed by adding the common Spanish infinitive suffix '-ar' to the root. The semantic evolution from 'step' to 'graduate' reflects how academic achievement was viewed as advancing steps or levels in education.

Several common Spanish words share this Latin root 'gradus': 'grado' (degree, grade, level), 'grada' (step, tier), and 'gradual' (gradual). All these words maintain a connection to the original concept of steps or levels, whether literal or metaphorical.

English speakers can easily connect 'graduar' to several familiar English words that come from the same Latin root: 'graduate,' 'grade,' 'degree,' and 'gradual.' All these words preserve some aspect of the original Latin meaning of 'step' or 'degree.' For example, when you 'graduate,' you've completed all the steps of your education, while 'gradual' refers to something happening in steps or stages.