Usually means: Protein that inhibits gene expression.
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We found 25 dictionaries that define the word repressor:

General (15 matching dictionaries)
  1. repressor: Merriam-Webster
  2. repressor: Oxford Learner's Dictionaries
  3. repressor: American Heritage Dictionary of the English Language
  4. repressor: Collins English Dictionary
  5. repressor: Vocabulary.com
  6. repressor: Wordnik
  7. repressor: Wiktionary
  8. repressor: Webster's New World College Dictionary, 4th Ed.
  9. repressor: Infoplease Dictionary
  10. repressor: Dictionary.com
  11. Repressor: Wikipedia, the Free Encyclopedia
  12. repressor: Rhymezone
  13. repressor: FreeDictionary.org
  14. repressor: Mnemonic Dictionary
  15. repressor: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. repressor: Encyclopedia

Medicine (5 matching dictionaries)
  1. repressor: Merriam-Webster Medical Dictionary
  2. Dorland's Illustrated Medical Dictionary (No longer online)
  3. online medical dictionary (No longer online)
  4. Microbial Genetics Glossary (No longer online)
  5. repressor: Medical dictionary

Science (4 matching dictionaries)
  1. Drug Discovery and Development (No longer online)
  2. Repressor: Biology dictionary
  3. Glossary of Genetic Terms (No longer online)
  4. AGRICULTURAL AND ENVIRONMENTAL BIOTECHNOLOGY (No longer online)

(Note: See repressors as well.)

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Definitions from Wiktionary (repressor)

▸ noun:  Anything that represses.
▸ noun:  (genetics) Any protein that binds to DNA and thus regulates the expression of genes by decreasing the rate of transcription.

Similar:
contrasuppressor, inhibitor, suppressant, inactivator, repressilator, inhibitant, reducent, antiresorptive, restringent, antiandrogen, more...

Opposite:
activator

Phrases:
repressor protein, Lac repressor, repressor gene, repressor proteins, active repressor, more...

Adjectives:
lac, transcriptional, active, specific, translational, inactive, sensitive, bound, free, type, cytoplasmic

Colors:
    black,     gray,     dark green,     maroon,     charcoal, more...

▸ Words similar to repressor

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▸ Popular adjectives describing repressor

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▸ Rhymes of repressor

▸ Invented words related to repressor

Similar:
contrasuppressor, inhibitor, suppressant, inactivator, repressilator, inhibitant, reducent, antiresorptive, restringent, antiandrogen, more...

Opposite:
activator

Phrases:
repressor protein, Lac repressor, repressor gene, repressor proteins, active repressor, inactive repressor, repressor constitutive mutation, regulator gene, repressor gene, regulator gene repressor gene, more...

Adjectives:
lac, transcriptional, active, specific, translational, inactive, sensitive, bound, free, type, cytoplasmic

Colors:
    black,     gray,     dark green,     maroon,     charcoal, more...



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