A form of theatre in which all, or at least most, of the lines are sung rather than spoken. They are commonly written in Italian, German, and French. However, there are also Czech, Chinese, Russian, and English operas. Frequently, the three largest roles are given to a soprano, a bass, and a tenor.

A soprano is a female singer with the highest vocal range. There are, however, many different types of sopranos, each suited to certain roles.

A bass is a male singer with the lowest range. An example of a very good bass voice is Nicolai Ghiaurov.

A tenor is a male singer with the highest vocal range. Often, they are the hero of the story and are in love with the soprano's character.

The plots range from a light-hearted comedy such as "La Fille du Regiment" (The Daughter of the Regiment) to tragedies such as "Aida" or "La Boheme". The music is often difficult to sing, though some arias are easier than others. I would not recommend attempting to sing any of them without training, however. Contrary to what some people believe, singing opera takes a great deal of work and skill and hitting all those high notes, which many people refer to as shrieking, is certainly not easy.

If you intend to go to the opera, it is a good idea to read the story first. Whether you have the story in a book or find it online, it tends to be more enjoyable if you know the story. Especially if you aren't a great opera fan and are simply going because some one you know wants you to accompany them.
Notable opera singers are: Placido Domingo, Luciano Pavarotti, Joan Sutherland, Nicolai Ghiaurov, Maryline Horne, Maria Callas, Renee Fleming, Angela Gheorgiu, Roberto Alagna, and Jose Carreras.
di Don't have one. 30 dicembre 2007
1. The fastest Internet Browser available. Faster than Mozilla Firefox 2 and Internet Explorer 7 in all tests, but still only 1% of people use it.

2. Some gay kind of concert that rich people go to where they have to wear special glasses just to see the stage.
Example 1:

guy 1: Dude! Firefox is the fastest browser on the planet. I can't believe you're still using IE7.

guy 2: Dude!! Opera 9 is the fastest in all tests, and is more cutting edge than both of them.

guy 1: Oh... well I'm just going off of what my Firefox cult tells me. They didn't mention Opera.

Example 2:

Guy 1: Dude! Where did you take your girlfriend yestarday on your date?

Guy 2: I took her to the Opera. I wanted her to assume I was both rich and an intellectual.

Guy 1: Well... Did it work?

Guy 2: Ohhhh yea!
di Todd W 11 dicembre 2006
Though it only owns about 20% of the global browser market share, it's quite possibly the best browser available. Unlike Internet Explorer, it's secure. Unlike Firefox, it's fast. Unlike Safari, it actually works. It meets W3C Web Standards, and got a higher score than any other browser on the Acid 3 test.
Opera is the browser of choice, by Jesus Christ himself.
di Da Milkman 03 giugno 2009
Opera is a web browser that is superior to FireFox and Internet Explorer in many ways. Its a lot more secure and feature-filled than both and unlike FireFox is small and quick, not a horrible resource hog that requires every extention imaginable to be functional and/or useful.

I'm browsing Urban Dictionary using the keyboard and voice recognition found in Opera.
di IPF 24 marzo 2007
1) Acronym for "Oscillation Project with Emulsion-Racking Apparatus" an experiment at the LGNS facility in Italy, an experiment known for promoting a sensational and clearly incorrect result that the neutrino can travel faster than light.

2) Verb: to screw up in an experimental or research context

3) Noun: an experimental error that should have been caught, but affected results.

4) to pull an OPERA. verb: to make an error when showing results; to engage in definition #3
Don't OPERA that cable!

Wait, this graph wrong, I pulled an OPERA.
di MikeMikeMik 24 febbraio 2012
An fast internet browser which only renders standards compliant code. Since a large portion of websites rely on non-standard code, Opera is out of touch with the real world.
In a perfect world Opera would be the browser of choice. Until then, many developers will sadly find it easier to block opera browsers.
di xpenzif 03 marzo 2010
Fastest browser and lightest one I know of between IE7 and Firefox. People seem to underrate this browser, it's less than 8MB yet manages to hold a bittorent downloader, email client, magic wand features, and endless customization to the interface along with thousands of widgets and themes (skins) you can choose from on their site. Most stuff Firefox has or just added, has been intergrated with Opera for years.
Opera > Firefox > IE7
di Underwater Ruins 10 luglio 2008

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