What is the Spanish word for seventeen?

The Spanish word for seventeen is "diecisiete." This term is formed by combining "diez" (ten) with "siete" (seven), which reflects the way numbers are constructed in Spanish from eleven to nineteen. In this range, the words for the numbers typically start with "dieci-" followed by the unit number. Hence, "diecisiete" literally indicates ten plus seven. Understanding this composition helps in recognizing other related numbers, such as "dieciocho" for eighteen and "diecinueve" for nineteen, reinforcing the pattern of numerical naming in Spanish.