A perfect standard of beauty, intellect etc., or a standard of excellence to aim at.
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 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.
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.
Pertaining to ideas, or to a given idea.
Perfect, flawless, having no defects.
Teaching or relating to the doctrine of idealism.
A level of quality or attainment.
Something used as a measure for comparative evaluations; a model.
The proportion of weights of fine metal and alloy established for coinage.
The upper petal or banner of a papilionaceous corolla.
The sheth of a plough.
A collar of mail protecting the neck.
A rule or set of rules or requirements which are widely agreed upon or imposed by government.
An inverted knee timber placed upon the deck instead of beneath it, with its vertical branch turned upward from that which lies horizontally.
One of the upright members that supports the horizontal axis of a transit or theodolite.
A sturdy, woody plant whose upright stem is used to graft a less hardy ornamental flowering plant on, rather then actually planting it.
Any upright support, such as one of the poles of a scaffold.
A manual transmission vehicle.
A bottle of wine containing 0.750 liters of fluid.
A large drinking cup.
standard idiom, a prestigious or standardized language variety; standard language
A tree of natural size supported by its own stem, and not dwarfed by grafting on the stock of a smaller species nor trained upon a wall or trellis.
A musical work of established popularity.
An object supported in an upright position, such as a lamp standard.
The flag or ensign carried by a military unit.
Grade level in primary education.
Having a manual transmission.
Conforming to the standard variety.
Of a usable or serviceable grade or quality.
As normally supplied (not optional).
Falling within an accepted range of size, amount, power, quality, etc.
Having recognized excellence or authority.
Growing alone as a free-standing plant; not trained on a post etc.
An expression of agreement.