The Spanish word 'bromuro' (bromide) comes from combining two elements: 'bromo' (bromine) and the chemical suffix '-uro'. The root 'bromo' can be traced back to the Ancient Greek word 'βρῶμος' (bromos), which meant 'stench' or 'fetid odor'. This etymology reflects the characteristic strong, unpleasant smell of bromine gas, which led to its naming when it was discovered in the 19th century.

A simpler related Spanish word is 'bromo' (bromine), which refers to the chemical element itself. While 'bromuro' specifically refers to chemical compounds containing bromine (bromides), 'bromo' is the more basic term for the element. This follows a common pattern in Spanish chemical terminology where '-uro' is added to element names to form the names of their compounds.

English speakers might recognize the connection to words like 'bromine' and 'bromide', which share the same Greek origin. The English word 'bromine' was coined in the 1800s directly from the Greek 'bromos' (stench), and 'bromide' follows the same pattern as Spanish 'bromuro', using the chemical suffix '-ide' instead of '-uro'. These words maintain a connection to the original Greek meaning through bromine's characteristic strong smell.