Vitamin D3, also known as cholecalciferol, comes from fortified foods, animal foods (fatty fish, cod liver oil, eggs, and liver), supplements, and can be made internally when your skin is exposed to ultraviolet (UV) radiation from the sun. Structurally, these two are not the same.
Definition of mind for Students. 1  1 : the part of a person that thinks, reasons, feels, understands, and remembers. 2  2 : memory 1 Keep my advice in mind. 3  3 : intention 1 I changed my mind. 4  4 : a person's view or opinion about something Speak your mind.
An example of mind is to watch one's manners at the dinner table. 1  memory; recollection or remembrance: her name slips my mind. 2  what one thinks; opinion: speak your mind.  that which thinks, perceives, feels, wills, etc.; seat or subject of consciousness.