Ma'anar ƙamus na kalmar "cholecalciferol" wani nau'i ne na bitamin D wanda ke haɗe a cikin fata daga 7-dehydrocholesterol lokacin da aka fallasa shi ga hasken rana. Hakanan ana samun Cholecalciferol a cikin wasu abinci, kamar kifi mai kitse da yolks kwai, kuma ana iya ɗaukar shi azaman kari na abinci. Yana da mahimmanci don kiyaye matakan da suka dace na calcium da phosphorus a cikin jiki, kuma yana da mahimmanci don samuwa da kiyaye kasusuwa da hakora masu ƙarfi.