Union, industrial township (1990 pop. 50,024), Union co., NE N.J.; settled 1749 by colonists from Connecticut, set off from Elizabethtown 1808. Steel and metal products and paint are among its various manufactures. Union was the site of a Revolutionary battle in 1780. It is the seat of Kean Univ. of New Jersey.
union
Union the
union [′yün·yən]
A pipe fitting, 1 used to connect the ends of two pipes, neither of which can be turned; consists of three pieces, the two end pieces (having inner threads), which are tightened around the pipe ends to be joined, and a center piece, which draws the two end pieces together as it is rotated, effecting a seal. Also see flange union.
Union
union
The joining of two files in a relational database. See set theory.union
1. an association, alliance, or confederation of individuals or groups for a common purpose, esp political
2. a device on a flag representing union, such as another flag depicted in the top left corner
3. a device for coupling or linking parts, such as pipes
4.
a. an association of students at a university or college formed to look after the students' interests, provide facilities for recreation, etc.
b. the building or buildings housing the facilities of such an organization
5. Maths a set containing all members of two given sets. Symbol: ∪, as in A∪B
6. in 19th-century England
a. a number of parishes united for the administration of poor relief
b. a workhouse supported by such a combination
7. Textiles a piece of cloth or fabric consisting of two different kinds of yarn
Union the
1. Brit
a. the union of England and Wales from 1543
b. the union of the English and Scottish crowns (1603--1707)
c. the union of England and Scotland from 1707
d. the political union of Great Britain and Ireland (1801--1920)
e. the union of Great Britain and Northern Ireland from 1920
2. US
a. the United States of America
b. the northern states of the US during the Civil War
c. (as modifier): Union supporters
union [′yün·yən]
(computer science)
A data structure that can store items of different types, but can store only one item at a time.
(design engineering)
A screwed or flanged pipe coupling usually in the form of a ring fitting around the outside of the joint.
(mathematics)
A union of a given family of sets is a set consisting of those elements that are members of at least one set in the family. Also known as join.
For two fuzzy setsAandB, the fuzzy set whose membership function has a value at any elementxthat is the maximum of the values of the membership functions ofAandBatx.
The union of two Boolean matricesAandB, with the same number of rows and columns, is the Boolean matrix whose elementcijin rowiand columnjis the union of corresponding elementsaijinAandbijinB.
The union of two graphs is the graph whose set of vertices is the union of the sets of vertices of the two graphs, and whose set of edges is the union of the sets of edges of the two graphs.
union
union
| 1. | (set theory) | union - An operation on two sets which returns the
set of all elements that are a member of either or both of the
argument sets; normally written as an infix upper-case U
symbol. The operator generalises to zero or more sets by
taking the union of the current partial result (initially the
empty set) with the next argument set, in any order. For example, (a, b, c) U (c, d, e) = (a, b, c, d, e) | |
| 2. | (programming) | union - A type whose values may be of one of a
number of other types, thet current type depending on
conditions that are only known at run-time. A variable of
union type must be allocated sufficient storage space to hold
the largest component type. Some unions include extra
information to say which type of value the union currently has
(a "tagged union"), others rely on the program to keep track
of this independently. A union contrasts with a structure or record which stores values of all component types at once. | |
| 3. | (database) | union - An SQL operator that concatenates two result sets, that must have the same number and types of columns. The operator may be followed by the word "ALL" to indicate that results that appear in both sets should appear twice in the output. |
Union
a political unit formed by joining monarchical states under the crown of one sovereign.
In state law, two types of union are distinguished—personal and organic. A personal union may arise whenever, as a result of dynastic ties and the order of succession, one person becomes the monarch of two or more states; in this way, for example, England and Hanover were joined in a union from 1714 to 1837. States joined in a personal union retain their own sovereignty, and the power of the monarch is nominal.
An organic union may be formed on the basis of a treaty, as in the case of the union of Sweden and Norway from 1814 to 1905, or it may be imposed by a stronger state on a weaker one, as in the case of the union of Austria and Hungary from 1867 to 1918 or the union of Denmark and Iceland from 1918 to 1944. In international relations, an organic union acts as a single sovereign state.
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|