Definition

1. Verb (intransitive):

   • To undergo caseation; to become cheeselike in texture or appearance, typically used in a pathological context to describe necrotic tissue.
   • To undergo a biochemical change resulting in a soft, crumbly, cheese-like consistency.

2. Verb (transitive, rare/technical):

   • To cause (a substance, especially milk) to coagulate or curdle into a cheese-like state.

Usage and Examples

• Verb (intransitive):

  • In tuberculosis, the infected lung tissue may caseate, forming a characteristic cheesy necrosis.
  • The pathologist noted that the central portion of the granuloma had begun to caseate.

• Verb (transitive):

  • The specific bacterial culture can caseate the milk, producing a unique fermented product. (This usage is less common and highly technical.)

Advanced Usage and Notes

• Technical Context: The term is almost exclusively used in medical, pathological, and microbiological contexts. It describes a specific type of tissue death (necrosis) seen in diseases like tuberculosis.
• Process Description: Caseation is a form of coagulative necrosis where the tissue is transformed into a dry, amorphous mass resembling cheese (Latin: ).

Variants and Related Words

• Caseation (noun): The process or result of becoming caseous.
  • The caseation of the lymph node was evident under the microscope.
• Caseous (adjective): Having a cheese-like consistency.
  • The biopsy revealed caseous material typical of an old infection.

Synonyms

• Coagulate (in a broader, non-specific sense for the transitive use).
• Necrotize (specifically for tissue death, but not implying the cheeselike quality).
• Curdle (for the transitive use with milk, though less precise).

Antonyms

• Liquefy (as in liquefactive necrosis, a different pathological process).
• Resolve (as in healing without forming caseous material).

Word Family and Etymology

• Origin: Early 19th century; from Latin (cheese) + the verbal suffix .
• Related Medical Terms: Caseous necrosis, caseating granuloma.

Verb

1. become cheeselike
   • necrotic tissue caseates
2. turn into cheese
   • The milk caseated