Standard Terminology Relating to Nanotechnology (PDF; 518 KB)
From press release:

ASTM International’s Committee E56 has recently published the first known consensus-based standard defining a common technical language for the rapidly developing field of nanotechnology. The issuance of ASTM E2456-06, Standard Terminology Relating to Nanotechnology, has the agreement of a broad range of experts and provides precisely defined vocabulary for the burgeoning nanotechnology industry.

The standard establishes terminology for such fundamental terms as nano-, nanotechnology, nanoscale and nanoparticle. In addition to providing a specific, shared vocabulary among scientists, an agreed-upon terminology also helps to foster a common understanding among consumers as nano products enter the marketplace.

Source: American National Standards Institute (ANSI)

Cardiac Glossary
Alphabetical list of terms, from ablation to Wolff-Parkinson White Syndrome. Some definitions include multimedia.
See also: Heart and Stroke Encyclopedia

Source: American Heart Association

Spectrum’s Guide to Recent Electronics: Industry Acronyms and Abbreviations (SGTREIAA)

When you live on the cutting edge of technology, there are, literally, no words to describe it. Instead we have acronyms. Lots and lots of acronyms.

And for good reason. Imagine a discussion of high-density-technique metal-oxide semiconductors, integrated database application programming interfaces, or—let’s go out on a limb here—separate absorption-graded multiplication avalanche photo­diodes. Without acronyms, by the time you got halfway through the conversation, the technology in question would be obsolete.

Here we’ve compiled a list of our favorites to help you through your day. It’s not meant to be comprehensive—there are plenty of more thorough sources, including an IEEE dictionary—and it’s certainly not meant to be offensive. But we hope it shows the interesting and sometimes really weird ways new acronyms come about.

Source: IEEE Spectrum

Glossary: New Electronics, Computer Science Acronyms

From ABT: Advanced BiCMOS technology to the SO Family.

Source: IEEE Spectrum

Blasting Glossary
Source: International Society of Explosives Engineers (via U.S. Mine Rescue Association)
“These definitions are not necessarily intended to conform to those set forth in any governmental regulations or guidelines, nor are they intended to describe any manufacturer’s particular product configuration.”