elective (Noun) Something that is option or that may be elected, especially a course of tertiary study. elective (Adjective) Of, or pertaining to voting or elections. elective (Adjective) That involves a choice between options; optional or discretionary. My insurance wouldn't pay for the operation because it was elective surgery.
the mellotron is an electro mechanical polyphonic tape replay keyboard originally developed and built in birmingham england in 1963it evolved from a similar instrument the chamberlin but could be mass produced more effectivelyroduction of the mellotron ceased in 1986 but it regained popularity in the 1990s and was used by several notable bands this led to the resurrection of the original manufacturer streetly electronics
History and Uses: 1  Boron was discovered by Joseph-Louis Gay-Lussac and Louis-Jaques ThÃ©nard, French chemists, and independently by Sir Humphry Davy, an English chemist, in 1808. 2  Boron is used in pyrotechnics and flares to produce a green color. 3  Boron forms several commercially important compounds.