General English

General Science

  • adjective having basic differences that prevent effective joint working


  • adjective unable to cross-fertilise and produce offspring


  • adjective referring to something which does not go together with something else
  • adjective referring to drugs which must not be used together because they undergo chemical change and the therapeutic effect is lost or changed to something undesirable
  • adjective referring to tissue which is genetically different from other tissue, making it impossible to transplant into that tissue