What term describes a Spanish conqueror of the Americas?

The term that describes a Spanish conqueror of the Americas is "conquistador." This term specifically refers to the Spanish soldiers, explorers, and adventurers who were instrumental in the conquest and colonization of large parts of the Americas from the late 15th century through the 17th century. Notable conquistadors include Hernán Cortés, who led the expedition that resulted in the fall of the Aztec Empire, and Francisco Pizarro, who conquered the Inca Empire.

Other terms do not accurately describe this specific group of individuals. A viceroy is a royal official who runs a country or province in the name of and as representative of the monarch of the territory, which does not capture the essence of conquest and exploration. A colonist refers to a settler who establishes a colony, which can include not just conquerors but also families and farmers. Lastly, a mercenary is a professional soldier hired to serve in a foreign army for compensation rather than out of loyalty or allegiance, which again does not apply to the historical context of the Spanish conquerors who operated largely under the authority of the Spanish crown and for the purpose of expansion, wealth, and territory.