>> LEX file

LEX file format description

Many people share .lex files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .lex file can be edited, converted or printed with. On this page, we try to provide assistance for handling .lex files.

3 filename extension(s) found in our database.

.lex - Adobe InDesign Proximity Dictionary

The LEX other files are related to Adobe InDesign. LEX file is an Adobe InDesign Proximity Dictionary.

Adobe InDesign
Other files
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Adobe InDesign Proximity Dictionary related extensions:
Adobe Director Xtra Extension
Dreamweaver Site Definition
Macromedia Fireworks Batch Script
Adobe After Effects Plug-in
Adobe Audition XFM Plug-in
Adobe Audition Filter

.lex - Microsoft Office Custom Dictionary

The LEX data files are related to Microsoft Office Word. LEX file is a Microsoft Office Dictionary data. A custom dictionary allows you to supplement the main dictionary with additional words, such as names, specialized technical terms, foreign words or alternative spelling of some words.

Microsoft Office Word
Data files
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Microsoft Office Custom Dictionary related extensions:
Microsoft Project XML Data Interchange File
MS Transport Neutral Encapsulation Format
Microsoft Office Business Contact Manager Backup Data
PKCS #7 Compressed Message
Microsoft Office Outlook for Mac Database
Microsoft Outlook 2003 E-mail Cookies Data

.lex - SmartWare Dictionary Data

The LEX data files are related to SmartWare. LEX file is a SmartWare Dictionary Data. SmartWare is a programming platform. SmartWare also includes a word processor, spreadsheet, and communication modules.

Data files
- / -
SmartWare Dictionary Data related extensions:
SmartWare Executable Program
SmartWare Backup Definition Data
SmartWare Backup Query Definition
SmartWare Backup Report Definition
SmartWare Sort Definition Backup
SmartWare Backup Transaction Definition

Naturally, other applications may also use the .lex file extension. Even harmful programs can create .lex files. Be especially cautious with .lex files coming from an unknown source!

Can't open a .lex file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .lex file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

elx, ex, iex, kex, ldx, le, lec, led, les, lfx, lrx, lsx, lwx, lx, lxe

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

TurboWin LES Data
Luxology Modo 3D Scene
LayoutEditor Schematic Data
The Tuttles Madcap Misadventures Data
Land F/X Project
Elixir Interactive Shell Script

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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