The Spanish verb 'visar' (meaning 'to visa' or 'to endorse a document') comes from the French verb 'viser' with the same meaning. The French term ultimately derives from the Latin word 'visus', meaning 'seen', which is the past participle of 'videre' (to see). This etymology makes intuitive sense since a visa represents an official endorsement indicating that a document has been seen and approved by authorities.

Several common Spanish words share this Latin root related to seeing, including: 'ver' (to see), 'vista' (view), 'visible' (visible), and 'visión' (vision). All these words maintain a connection to the concept of seeing or viewing, while 'visar' specifically evolved to refer to the official act of reviewing and endorsing documents.

Many English words are related to 'visar' through the same Latin root 'visus', including 'visa', 'visible', 'vision', 'visual', and 'visit'. The word 'visa' in English has the same meaning as the action described by the Spanish 'visar' - it refers to an endorsement on a passport or document indicating it has been officially examined. The connection to seeing/viewing is preserved in all these related words.