Someone who accedes to some act, now especially a crime; one who contributes as an assistant or instigator to the commission of an offense.
Accompanying as a subordinate; additional; accessory; especially, uniting in, or contributing to, a crime, but not as chief actor. See accessory.
One who promotes.
One who promotes entertainment events or goods.
The section of DNA that controls the initiation of RNA transcription as a product of a gene.
An accelerator of catalysis that is not itself a catalyst.