Definition

1. Noun:
   • A biochemical process: A metabolic process in which an agent (typically yeast or bacteria) causes an organic substance to break down into simpler substances, often producing gases, acids, or alcohol. This process typically occurs in the absence of oxygen (anaerobically).
   • A state of agitation or excitement: A state of turbulent change, development, or unrest, often within a social or political context.

Usage and Examples

• Referring to the biochemical process:
  • The fermentation of grapes is essential for making wine.
  • Yogurt is produced through the bacterial fermentation of milk.
• Referring to a state of agitation or change:
  • The country was in a state of political fermentation.
  • New ideas caused a fermentation in the scientific community.

Advanced Usage

• "In fermentation": Describes a substance currently undergoing the biochemical process.
  • The beer is still in fermentation and will be ready in two weeks.
• "A period of fermentation": Describes a time of active development or unrest.
  • The 1960s was a period of great cultural and social fermentation.

Variants and Related Words

• Ferment (noun/verb): The agent or process causing fermentation; to undergo or cause fermentation. Also used figuratively for agitation.
  • Yeast is a common ferment. (noun)
  • The news began to ferment public discontent. (verb)
• Fermenter (noun): A vessel in which fermentation is carried out.
• Fermentable (adjective): Capable of being fermented.

Synonyms

• For the biochemical process: Zymosis, enzymatic digestion, souring, leavening.
• For the state of agitation: Unrest, turmoil, agitation, excitement, upheaval, tumult.

Related Phrases and Idioms

• "To be in a ferment": To be in a state of intense excitement or agitation.
  • The student body was in a ferment over the new policy changes.
• "A ferment of ideas": A situation where many new ideas are being actively developed and discussed.
  • The conference was a ferment of ideas about sustainable energy.

Noun

1. a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol
2. a state of agitation or turbulent change or development
   • the political ferment produced new leadership
   • social unrest