Electrocardiography (ECG or EKG) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on the skin.
In rock climbing, mountaineering, and other climbing disciplines, climbers give a grade to a climbing route or boulder problem, intended to describe concisely the difficulty and danger of climbing it.
In mathematics, the Klein four-group (or just Klein group or Vierergruppe, four-group, often symbolized by the letter V or as K4) is the group, the direct product of two copies of the cyclic group of order 2.
The ITU-T V-Series Recommendations on Data communication over the telephone network specify the protocols that govern approved modem communication standards and interfaces.
The London and North Eastern Railway Class V4 was a class of 2-6-2 steam locomotive designed by Sir Nigel Gresley for mixed-traffic use.
QML (Qt Modeling Language) is a user interface markup language.
Rheinbote (Rhine Messenger, or V4) was a German short range ballistic rocket developed by Rheinmetall-Borsig at Berlin-Marienfelde during World War II.
Saint Kitts and Nevis, also known as the Federation of Saint Christopher and Nevis, is an island country in the West Indies.
A V4 engine is a four-cylinder engine with its cylinders arranged in a "V" configuration.
Vieques Air Link (VAL, IATA code:V4) is a small Puerto Rico-based airline that links Vieques with Culebra and mainland Puerto Rico.
The Visegrád Group, Visegrád Four, or V4 is a cultural and political alliance of four Central European statesthe Czech Republic, Hungary, Poland and Slovakia, that are members of the European Union (EU)for the purposes of advancing military, cultural, economic and energy cooperation with one another along with furthering their integration in the EU.
The visual cortex of the brain is a part of the cerebral cortex that processes visual information.