- (acoustics) The frequency a wireless radio frequency system operates at. A fixed radio frequency that's modulated (shifted up and down) in either frequency (FM) or in level (AM) by the audio signal.
Source: Church Audio & Acoustics Glossary
- (agriculture) An inert material added to an active ingredient in a pesticide to enhance its delivery or effectiveness.
- (biology) a phenotypically normal individual heterozygous for a normal allele and a mutant allele
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
- (electronics) A signal capable of being modulated to carry information.