dilute vs inspissate

dilute

verb
  • To make thinner by adding solvent to a solution, especially by adding water. 

  • To cause the value of individual shares or the stake of a shareholder to decrease by increasing the total number of shares. 

  • To become attenuated, thin, or weak. 

  • To weaken, especially by adding a foreign substance. 

adj
  • Of an animal: having a lighter-coloured coat than is usual. 

  • Having a low concentration. 

  • Weak; reduced in strength by dilution; diluted. 

noun
  • An animal having a lighter-coloured coat than is usual. 

inspissate

verb
  • To thicken a fluid, in the sense of making it more viscous, especially by boiling, evaporation, or condensation; to condense. 

  • Of a fluid: to become more viscous. 

How often have the words dilute and inspissate occurred in a corpus of books? (source: Google Ngram Viewer )