verb (v)

• take up mentally(verb.cognition)

  Synonym:
  absorb, ingest, take in
  

  source: wordnet30
• become similar to one's environment(verb.change)

  Example:
  Immigrants often want to assimilate quickly.
  

  Antonym:
  dissimilate
  

  source: wordnet30
• make similar(verb.change)

  Example:
  This country assimilates immigrants very quickly.
  

  source: wordnet30
• take (gas, light or heat) into a solution(verb.contact)

  Synonym:
  imbibe
  

  source: wordnet30
• become similar in sound(verb.change)

  Example:
  The nasal assimilates to the following consonant.
  

  source: wordnet30
• To bring to a likeness or to conformity; to cause a resemblance between.(verb)

  source: webster1913
• To become similar or like something else.(verb)

  source: webster1913