Back in the early 1900’s Funk theorized that certain common diseases were the result of dietary deficiencies — a radical theory at the time. He termed these nutrient factors “vital amines”. Quickly other researchers began testing his theory and found that deficiencies in specific vital amine factors could result in blindness, scurvy, and miscarriages to name a few. With time, “vital amines” was shortened to “vitamins”.
Voilà, another question answered!