promoter

[pruh-moh-ter]
noun
1.
a person or thing that promotes, furthers, or encourages.
2.
a person who initiates or takes part in the organizing of a company, development of a project, etc.
3.
a person who organizes and provides financial backing for a sporting event or entertainment.
4.
Chemistry. any substance that in small amounts is capable of increasing the activity of a catalyst.
5.
Also called collector. Metallurgy. a water-repellent reagent enhancing the ability of certain ores to float so that they can be extracted by the flotation process.
6.
Genetics.
a.
a site on a DNA molecule at which RNA polymerase binds and initiates transcription.
b.
a gene sequence that activates transcription.
7.
Obsolete. an informer.

Origin:
1400–50; late Middle English; see promote, -er1; replacing earlier promotour < Anglo-French

self-promoter, noun
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World English Dictionary
promoter (prəˈməʊtə)
 
n
1.  a person or thing that promotes
2.  a person who helps to organize, develop, or finance an undertaking
3.  a person who organizes and finances a sporting event, esp a boxing match
4.  chem a substance added in small amounts to a catalyst to increase its activity
5.  genetics a sequence of nucleotides, associated with a structural gene, that must bind with messenger RNA polymerase before transcription can proceed

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

promoter pro·mot·er (prə-mō'tər)
n.

  1. A substance that increases the activity of a catalyst.

  2. A DNA molecule to which RNA polymerase binds, initiating the transcription of mRNA.

  3. A chemical that may promote carcinogenicity or mutagenicity.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
promoter   (prə-mō'tər)  Pronunciation Key 
The region of an operon that acts as the initial binding site for RNA polymerase.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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