The Spanish word 'práctico' (meaning 'practical') comes from Latin 'practicus', which meant 'active' or 'practical'. The Latin word was borrowed from Ancient Greek 'praktikos' (πρακτικός), which also meant 'active' or 'practical'. This is a great example of how some academic and technical vocabulary in Spanish can be traced back through Latin to Greek origins, with the meaning remaining remarkably stable over time.

Some related Spanish words include 'práctica' (practice), 'practicar' (to practice), and 'practicante' (practitioner). All these words share the same Greek root and form a family of words related to practical action and application.

English speakers will find this word easy to remember as it's very similar to the English word 'practical', which shares the exact same Greek ancestry. Other related English words include 'practice', 'practitioner', and 'practically' - all of which maintain connections to the original meaning of something being active or practical in nature.