In my career in technology journalism and documentation writing, I've discovered a few holes in the English language. Our spoken language is evolving faster than the written canon can keep up with, and technology is the driving force behind the speed of its evolution. However, the language is still controlled officially by the people who make dictionaries, who subjectively observe the use of the language in formal printed form (books, news stories) and debate internally over whether certain words should be included in the new edition. This means that if every writer always followed "the rules," our language would never evolve.

So let me help the dictionary people a little by suggesting some technology-related words that have been ignored because they don't show up in written form in "publications that count" often enough, even though they're part of the corporate vernacular:

Relog

Verb. To log out of an application or service, then log back in again. Typically an action taken to implement a change in user preferences.

Performant

Adjective. Describes a method, practice, or device that performs well in terms of resource usage and/or speed of operation. Can also mean the top-performing member of a list or group of items.

Spend

Noun. The money (capital) spent or invested in a product or service, usually with the expectation of a return.

(I hate marketingspeak -- really. But this word is so frequently used, even outside of marketing circles, that we've got to start seeing it as a noun as well as a verb.)

Filename

Noun. The name of a file.

(The reason why this must be a one-word noun instead of two words is, it's used in the context of technical instructions as a singular entity, not the property of an entity.)

Username

Noun. The login name of a user of a system or service.

Login

Noun. The user credentials (username and password) required for service authentication.

Verb. The act of authenticating to a service.

(I do not approve of the verb usage here because it gets confusing when you say "login to a service" -- it doesn't work well in that context. It would make more sense and be more readable to say "log into a service." However, a lot of people use this as a verb, and I think it has some validity.)

Bitness

Adjective. Explains whether a piece of computer hardware or software is 32-bit or 64-bit.

Sysadmin

Noun. Short name for a system administrator, usually on the BOFH level.