Dark energy, etc...

some new words (20th Century) 2008

New words in the Merriam-Webster dictionary;

Posted By THE ASSOCIATED PRESS

Merriam-Webster Inc. has added more than 100 new entries to its new edition of the Collegiate Dictionary. Here are some, along with the year in which Merriam-Webster first found them used in an English-language publication:

Air quotes (1989): gesture made by raising and flexing the index and middle fingers of both hands, used to call attention to a spoken word or expression.
Dark energy (1998): hypothetical form of energy that produces a force that opposes gravity and is thought to cause the accelerating expansion of the universe.
Dirty bomb (1956): bomb designed to release radioactive material.
Dwarf planet (1993): celestial body that orbits the sun and has a spherical shape, but is too small to disturb other objects from its orbit.
Edamame (1951): immature green soybeans, usually in the pod.
Fanboy (1919): boy who is an enthusiastic devotee, such as of comics or movies.
Infinity pool (1992): outdoor swimming pool with an edge over which water flows into a trough, but seems to flow into the horizon.
Jukebox musical (1993): musical that features popular songs from the past.
Kiteboarding (1996): the sport of riding on a small surfboard propelled across water by a large kite, to which the rider is harnessed.
Malware (1990): software designed to interfere with a computer's normal functioning.