General English

General Science

  • noun the process of protecting something from undesirable change


  • noun keeping or not wasting
  • noun the maintenance of environmental quality and resources by the use of ecological knowledge and principles


  • In the context of historic buildings, efforts to bring old building finishes and features to a condition as close as possible to their original state when new. Conservation also involves planning and carrying out maintenance practices that will ensure the best appearance and condition of the building and its features for as long as possible.

Information & Library Science

  • noun the process of ensuring the survival of materials, e.g. library books, through repair and controlled storage conditions