selector

Noun

selector (plural selectors)

1. Someone or something which selects or chooses.
   • There is one selection for hot chocolate. All selectors are the push button type.1949, Billboard, volume 61, number 34, page 97
2. An administrator responsible for selecting which players will play for a side.
3. A matching expression in a stylesheet determining which elements in the markup are affected by a style.
   • The ID selector targets just one element per page, making it much more specific than a class selector that might target many.2007, Craig Cook, David Schultz, Beginning HTML with CSS and XHTML, Apress, →ISBN, page 28
   • The selector indicates the query expression to run over the DOM; the context indicates the portion of the DOM from which to run the query.2009, Dino Esposito, Microsoft ASP.NET and AJAX, Microsoft Press, →ISBN, page 140
4. A pointer to a structure describing a segment of memory.
   • Phar Lap executables […] provide a protected-mode selector, 34h, that maps to the first megabyte of physical memory.1990, Byte, volume 15, numbers 11-13, page 256
   • You will only have to be concerned with DPMI, selectors, and such, if you use Borland C++ in DOS.1995, Lary L. Myers, Keith Weiskamp, Amazing 3-D games adventure set, page 235
5. (Internet, historical) A text string transmitted to a Gopher server, identifying the resource to be retrieved.
   • Gopher selector strings are more liberal in makeup than URLs and may contain any characters other than a tab, return, or linefeed.1996, Kenneth H. Rosen, UNIX System V, Release 4: An Introduction, McGraw-Hill Osborne Media, page 438
6. A disc jockey.
   • That's my sector, homosexual dissector / Come again, rewind selector2009, “Medicine Ball”, in Relapse, performed by Eminem
   • This sonic body has to decide which music track to play at any particular moment. But when the selector is alone in front of the crowd, how do they know which track to play next?2011, Julian Henriques, Sonic Bodies, A&C Black, →ISBN, page 125
7. (Australia, historical) A person who is entitled to choose a tract of Crown land to purchase.
   • Each selector in turn chose the particular allotment he wanted for his client, and so on till this important work was over.1887, Harriet W. Daly, Digging, Squatting, and Pioneering Life in the Northern Territory of South Australia, page 78