There are a number of meanings for the word placebo:
- A placebo is an operation, a chemical solution or a pill, which doctors administer as if it were a therapy, but which they suppose to have no intrinsic therapeutic value.
- Placebo is also a Latin word meaning "I shall please". Placebo Domino in regione vivorum ("I shall please the Lord in the land of the living") is the first response in the Roman Catholic service of vespers for the dead - the service is sometimes known as "placebo" because of this.
- Placebo is also a Swedish/British/American band that formed in London in 1994.