Describing text or other material of a standard or routine nature.
Used to refer to a non-functional spacecraft used to test configuration and procedures.
A sheet of copper or steel used in the construction of a boiler.
Syndicated material.
The rating plate or nameplate required to be affixed to a boiler by the Boiler Explosions Act (1882).
Standard text or program code used routinely and added with a text editor or word processor; text of a legal or official nature added to documents or labels.
Hard, icy snow which may be dangerous to ski on.
Formulaic or hackneyed language.
A plate attached to industrial machinery, identifying information such as manufacturer, model number, serial number, and power requirements.
To store (standard text) so that it can easily be retrieved for reuse.
Pertaining to ideas, or to a given idea.
Not actually present, but considered as present when limits at infinity are included.
Optimal; being the best possibility.
Existing only in the mind; conceptual, imaginary.
Perfect, flawless, having no defects.
Teaching or relating to the doctrine of idealism.
A subsemigroup with the property that if any semigroup element outside of it is added to any one of its members, the result must lie outside of it.
A subring closed under multiplication by its containing ring.
A non-empty lower set (of a partially ordered set) which is closed under binary suprema (a.k.a. joins).
A collection of sets, considered small or negligible, such that every subset of each member and the union of any two members are also members of the collection.
A perfect standard of beauty, intellect etc., or a standard of excellence to aim at.
A Lie subalgebra (subspace that is closed under the Lie bracket) 𝖍 of a given Lie algebra 𝖌 such that the Lie bracket [𝖌,𝖍] is a subset of 𝖍.