The Spanish word 'medicina' (meaning 'medicine') comes directly from the Latin word 'medicina', meaning 'medicine' or 'medical art'. The Latin 'medicina' was formed from two parts: the word 'medicus' meaning 'physician', and the suffix '-ina' meaning 'pertaining to'. Going back further, 'medicus' itself derived from the Latin verb 'mederi', which meant 'to heal' or 'to cure'.

This etymology shows how the concept of medicine developed from the basic action of healing (mederi), to the person who does the healing (medicus), and finally to the broader field and practice of medicine itself (medicina).

Some related Spanish words include 'médico' (doctor), which comes directly from Latin 'medicus', and 'remedio' (remedy), which shares the same root 'med-' relating to healing. These words form a family of medical-related terms in Spanish that are fairly easy to recognize and remember.

English speakers can easily connect 'medicina' to several familiar English words. The most obvious is 'medicine' itself, which comes from the same Latin source. Other related English words include 'medical', 'medicate', 'remedy', and 'medic'. All these words share the ancient root relating to healing and curing. The similarity between Spanish 'medicina' and English 'medicine' makes this an easy word for English speakers to learn and remember.