The Spanish verb 'licuar' comes directly from the Latin verb 'liquare', which meant 'to make liquid' or 'to melt'. The word maintained a very similar meaning as it evolved from Latin to Spanish, with 'licuar' meaning 'to liquefy'. The spelling change from 'qu' to 'cu' reflects a common pattern in Spanish phonological development from Latin, where the 'qu' sound was simplified.

Some related Spanish words include 'líquido' (liquid), which comes from the same Latin root. The adjective 'líquido' is generally learned earlier by Spanish students and can help remember that 'licuar' refers to making something liquid or turning it into liquid form.

English speakers can connect 'licuar' to several familiar English words that share the same Latin ancestry, such as 'liquid', 'liquefy', and 'liquefaction'. The English word 'liquefy' is particularly helpful as it has exactly the same meaning as 'licuar'. Recognizing this connection can make it easier to remember both the meaning and usage of the Spanish verb.