…lasting or intended to last or remain unchanged indefinitely…
…an irreversible deformation that remains in a structure or material after it has been subjected to stress…
…the finished trackbed of a railway together with the track and other permanent equipment…
…a tooth in a mammal that replaces a temporary milk tooth and lasts for most of the mammal’s life…
…the presence in water of mineral salts (chiefly calcium sulphate) that are not removed by boiling…
…a magnet that retains its magnetic properties in the absence of an inducing field or current…
…the state or condition, envisaged by Leon Trotsky, of a country’s continuing revolutionary progress being dependent on a continuing process of revolution in other countries…
…(in the UK) a senior civil servant who is a permanent adviser to a Secretary of State…
…a person or thing that is well established in a particular place or situation…
…a method of setting the hair in waves or curls and then treating it with chemicals so that the style lasts for several months…
…(in the UK) a senior civil servant who is a permanent adviser to a Secretary of State…
