What is the meaning of thickening?

noun

• Any material used to thicken.
  • usage: "starch is used in cooking as a thickening"
  • synonyms: thickener
• Any thickened enlargement.
  • synonyms: node, knob
• The act of thickening.
  • synonyms: inspissation

verb

• Make thick or thicker.
  • usage: "Thicken the sauce"; "inspissate the tar so that it becomes pitch"
  • synonyms: thicken, inspissate
• Become thick or thicker.
  • usage: "The sauce thickened"; "The egg yolk will inspissate"
  • synonyms: thicken, inspissate
• Make viscous or dense.
  • usage: "thicken the sauce by adding flour"
  • synonyms: thicken, inspissate

adjective

• Accumulating and becoming more intense.
  • usage: "the deepening gloom"; "felt a deepening love"; "the thickening dusk"
  • synonyms: deepening
• Becoming more intricate or complex.
  • usage: "a thickening plot"