The C vocabulary . The C vocabulary was supplementary to the others and consisted entirely of scientific and technical terms. These resembled the scientific terms in use today, and were constructed from the same roots, but the usual care was taken to define them rigidly and strip them of undesirable meanings. They followed the same grammatical rules as the words in the other two vocabularies. Very few of the C words had any currency either in everyday speech or in political speech. Any scientific worker or technician could find all the words he needed in the list devoted to his own speciality, but he seldom had more than a smattering of the words occurring in the other lists. Only a very few words were common to all lists, and there was no vocabulary expressing the function of Science as a habit of mind, or a method of thought, irrespective of its particular branches. There was, indeed, no word for ‘Science’, any meaning that it could possibly bear being already sufficiently covered by the word Ingsoc .