4-letter words starting with x
- x ⊂y — inclusion
- x-ed — to cross out or mark with or as if with an x (often followed by out): to x out an error.
- x.12 — (standard) The American equivalent of UN/EDIFACT and various other national and industry EDI messaging protocols. The first Y2K ready version of X.12 is version 4010.
- x.21 — (communications, standard) A digital signaling interface recommended by ITU-T that includes specifications for DTE/DCE physical interface elements, alignment of call control characters and error checking, elements of the call control phase for circuit switched services, data transfer at up to 2 Mbps, and test loops. 64 kbps is the most commonly used transfer rate.
- x.25 — (protocol, standard) An ITU-T standard protocol suite for the DTE-DCE interface in a packet-switched network, approved by ISO. X.25 defines standard physical layer, data link layer and network layers (layers 1 through 3). It was developed to describe how data passes into and out of public data communications networks. X.25 networks are in use throughout the world. Document: ISO 8208. Several other ITU-T recommendations are relevant to packet switching: X.3, X.28, X.29, X.75.
- x.28 — The ITU-T standard specifying how to control a PAD from character-mode DTE, approved by ISO.
- x.29 — The ITU-T standard, approved by ISO, specifying procedures for the exchange of control information and user data between a PAD and a remote packet-mode DTE. Character-mode DTEs are often referred to as X.29 terminals.
- x.75 — The ITU-T standard specifying the protocols for communication between two PSDNs.
- xbbl — Xperimental Blood Bowl League
- xeme — Sabine's gull (Xema sabini).
- xeon — Pentium II Xeon
- xfun — A polymorphic functional language which is a cross between SML and Russell, developed by S. Dalmas <[email protected]> of INRIA in 1991, and intended for computer algebra.
- xian — a province in N central China. 75,598 sq. mi. (195,799 sq. km). Capital: Xian.
- xiao — Type of Chinese flute.
- xing — (US) crossing.
- xlib — X library: program interface to the X Window System.
- xlnt — excellent
- xmas — Xmas is used in informal written English to represent the word Christmas.
- xnty — Christianity
- xoff — control-S
- xoxo — An abbreviation for hugs and kisses, usually placed at the end of a letter.
- xpg3 — Version 3 of the X/open Portability Guide.
- xpop — (language) An extensible macro assembly language with user-redefinable grammar, for use with FAP.
- xslt — Extensible Stylesheet Language Transformations
- xtal — Abbreviation of crystal.
- xvga — eXtended Video Graphics Array
- xwip — X Window Interface for Prolog. A package for Prologs following the Quintus foreign function interface (e.g. SICStus Prolog). XWIP provides a (low-level) Xlib-style interface to X. The current version was developed and tested on SICStus 0.7 and MIT X11 R5 under SunOS 4.1.1. It should be adaptable to many other Unix configurations. Version 0.6.
- xylo — (colloquial, rare) xylophone.
- xyst — A xystus.
On this page, we collect all 4-letter words starting with letter X. It’s easy to find right word with a certain length. It is the easiest way to find 4-letter word that beginning with X to use in Scrabble or Crossword puzzles.