A collection (or family) of subsets of a given set, whose union contains every element of said original set.
The top sheet of a bed.
A persona maintained by a spy or undercover operative; cover story.
The front and back of a book, magazine, CD package, etc.
A cloth or similar material, often fitted, placed over an item such as a car or sofa or food to protect it from dust, rain, insects, etc. when not being used.
Area or situation which screens a person or thing from view.
An envelope complete with stamps and postmarks etc.
A solid object, including terrain, that provides protection from enemy fire.
The portion of a slate, tile, or shingle that is hidden by the overlap of the course above.
An insurance contract; coverage by an insurance contract.
A setting at a restaurant table or formal dinner.
A new performance or rerecording of a previously recorded song; a cover version; a cover song.
The distance between reinforcing steel and the exterior of concrete.
A fielding position on the off side, between point and mid off, about 30Β° forward of square; a fielder in this position.
A cover charge.
In a steam engine, the lap of a slide valve.
A lid.
In commercial law, a buyerβs purchase on the open market of goods similar or identical to the goods contracted for after a seller has breached a contract of sale by failure to deliver the goods contracted for.
To make a cover version of (a song that was originally recorded by another artist).
To defend (mark) a particular player or area.
To discuss thoroughly; to provide coverage of.
To set upon all of, so as to completely conceal.
To be upon all of, so as to completely conceal.
To provide insurance coverage for.
To traverse or put behind a certain distance.
To act as a replacement.
To deal with or include someone or something.
To be enough money for.
To invest (oneself with something); to bring upon (oneself).
To have as an assignment or responsibility.
To protect using an aimed firearm and the threat of firing; or to protect using continuous, heaving fire at or in the direction of the enemy so as to force the enemy to remain in cover; or to threaten using an aimed firearm.
To be over or upon, as to conceal or protect.
To place something over or upon, as to conceal or protect.
To extend over a given period of time or range, to occupy, to stretch over a given area.
To copulate with (said of certain male animals such as dogs and horses).
To protect or control (a piece or square).
Of, pertaining to, or consisting of cover versions.
Of or pertaining to the front cover of a book or magazine.
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 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 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) π of a given Lie algebra π such that the Lie bracket [π,π] is a subset of π.
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.