(Irregular preterit, past participle: set).
1. To locate; SYN. localize, place.
2. To put into a certain state; cause to be in a certain state.
3. To set to a certain position.<br /> 4. To insert (a nail below the surface); SYN. countersink.
5. To give a fine, sharp edge to a knife or razor.
6. To fix in a border, as of precious stones.
7. To establish as the highest level or best performance; SYN. mark.
8. To disappear beyond the horizon; of celestial bodies such as the sun and the moon; SYN. go down, go under.
9. To apply or start.

1. The act of putting something in position
2. A group of things of the same kind that belong together and are so used:
3. An abstract collection of numbers or symbols
4. An unofficial association of people or groups; SYN. circle, band, lot.
5. Several exercises intended to be done in series; SYN. exercise set.
6. Any electronic equipment that receives or transmits radio or tv signals
7. A unit of play in tennis or squash
8. (Psychology) A temporary readiness to respond in a particular way; SYN. readiness.
9. The descent of a heavenly body below the horizon

Being below the horizon

1. A usually offensive formation in football or basketball
2. A division of a tennis match won by the side that wins at least six games beating the opponent by two games or by winning a tiebreaker

In mathematics, any collection of defined things (elements), provided the elements are distinct and that there is a rule to decide whether an element is a member of a set. It is usually denoted by a capital letter and indicated by curly brackets {}.
For example, L may represent the set that consists of all the letters of the alphabet. The symbol Î stands for “is a member of”; thus p Î L means that p belongs to the set consisting of all letters, and 4 Ď L means that 4 does not belong to the set consisting of all letters. There are various types of sets. A finite set has a limited number of members, such as the letters of the alphabet; an infinite set has an unlimited number of members, such as all whole numbers; an empty or null set has no members, such as the number of people who have swum across the Atlantic Ocean, written as {} or Ć; a single-element set has only one member, such as days of the week beginning with M, written as {Monday}. Equal sets have the same members; for example, if W = {days of the week} and S = {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}, it can be said that W = S. Sets with the same number of members are equivalent sets. Sets with some members in common are intersecting sets; for example, if R = {red playing cards} and F = {face cards}, then R and F share the members that are red face cards. Sets with no members in common are disjoint sets. Sets contained within others are subsets; for example, V = {vowels} is a subset of L = {letters of the alphabet}.
Sets and their interrelationships are often illustrated by a Venn diagram.

Stands for Secure Electronic Transaction, a family of specifications for secure credit card transactions over the Internet.

In Egyptian mythology, the god of night, the desert, and of all evils. Portrayed as a grotesque animal, Set was the murderer of Osiris.
Evil beast-headed god with high square ears and a long snout; brother and murder of Osiris; Also called: Seth.

A session of music (as jazz or dance music) usually followed by an intermission; also; the music played at one session

In drama, the scenery and props (properties, the movable objects used by the actors or decorating the set).

In printing and display, a group of related characters, such as a character set. See also character set.

1. To change the value of a bit to 1.
2. To establish a particular condition, such as setting tab stops, setting a counter to 0, or setting a breakpoint. See also breakpoint.