transcription, транскрипция: [ ˌkō-lə-(ˌ)kal-ˈsi-fə-ˌrȯl, -ˌrōl ]
noun
Etymology: International Scientific Vocabulary
Date: 1955
: a sterol C 27 H 43 OH that is a natural form of vitamin D found especially in fish, egg yolks, and fish-liver oils and is formed in the skin on exposure to sunlight or ultraviolet rays — called also vitamin D 3