Marie Curie is remembered for her discovery of radium and polonium, and her huge contribution to the fight against cancer. Born Maria Sklodowska on 7 November 1867 in Warsaw, Poland, she was the youngest of five children of poor school teachers.
Medical Definition of b.i.d. (on prescription) b.i.d. (on prescription): Seen on a prescription, b.i.d. means twice (two times) a day. It is an abbreviation for bis in die which in Latin means twice a day. The abbreviation b.i.d. is sometimes written without a period either in lower-case letters as bid or in capital letters as BID.
(on prescription): Seen on a prescription, q.d. (or qd) means one a day (from the Latin quaque die). The abbreviation is sometimes written without a period in capital letters as QD. (or qid or QID) is four times a day; q.i.d. 2  stands for quater in die (in Latin, 4 times a day). 3  q_h: If a medicine is to be taken every so-many hours, it is written q_h; the q standing for quaque and the h indicating the number of hours.