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sigma
The Collaborative International Dictionary
Sigma

Sigma \Sig"ma\, n.; pl. Sigmas. [L., from Gr. ???, ???.] The Greek letter [Sigma], [sigma], or [sigmat] (English S, or s). It originally had the form of the English C.

Douglas Harper's Etymology Dictionary
sigma

18th letter of the Greek alphabet, corresponding to Latin S, a metathesis of Hebrew samekh. In uncial writing, shaped like an S or a C.

Wiktionary
sigma

n. 1 The name for the eighteenth letter of the Classical Greek and Modern Greek, the twentieth letter of Old Greek and Ancient Greek. 2 (context mathematics English) The symbol '''Σ''', used to indicate summation of a set or series. 3 (context statistics English) The symbol '''σ''', used to indicate one standard deviation from the mean, particularly in a normal distribution.

WordNet
sigma

n. the 18th letter of the Greek alphabet

Wikipedia
Sigma

Sigma ( upper-case Σ, lower-case σ, lower-case in word-final position ς; ) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. When used at the end of a word (when the word is not all caps), the final form (ς) is used, e.g. (Odysseus); note the two sigmas in the center of the name, and the word-final sigma at the end.

SIGMA (verification service)

SIGMA is an electronic verification service offered by Nielsen Media Research and is generally used for commercials, infomercials, video news releases, public service announcements, satellite media tours, and electronic press kits. It operates by encoding the SIGMA encoder ID, date of encoding, and time of encoding in lines 20 and 22 of the video signal, which is outside of the area displayed on a normal television screen (this is similar to how closed captioning is transmitted). On a professional video monitor with underscan capability activated or a computer display of the entire video frame, the SIGMA data will look like small, moving white lines at the top of the frame. Nielsen provides overnight reports of airplay in all television markets in the country.

Category:Television technology

Sigma (couch)

The Ancient Roman furniture, sigma was a semi-circular couch sometimes used at banquets instead of the triclinium. Its name comes from the lunate sigma (upper case C, lower case ϲ) — which resembles, but which is not at all related to, the Latin letter C and was used in Eastern forms of Greek writing and in the Middle Ages.

Sigma (cosmology)

Sigma in cosmology was a property of galaxies used when trying to work out the mystery of galaxies and their supermassive black holes.

Sigma (disambiguation)

Sigma is a letter of the Greek alphabet.

Sigma may also refer to:

Sigma (duo)

Sigma are an English drum and bass DJ and record production duo consisting of Cameron James "Cam" Edwards (born 14 August 1990) and Joseph Aluin "Joe" Lenzie (born 11 December 1990). They met at Leeds University at drum and bass nights. Their 2010 collaboration with DJ Fresh, " Lassitude", peaked at number 98 on the UK Singles Chart. Their single " Nobody to Love" topped the UK Singles Chart, becoming their first UK number one. Follow-up single " Changing", featuring Paloma Faith, also got to number one.

Usage examples of "sigma".

He wound up on the Beach at Sigma End, where he hung out with guys like the legendary Billy Anker, at that time obsessed with Radio RX1.

Sitting directly across from Tembo Laibon was Buko, the red alien from Sigma Silani IV.

Sigma was made in his image, and he was proud of his access to the corridors of power, proud as well of the extralegal status he enjoyed.

Sitting directly across from Tembo Laibon was Buko, the red alien from Sigma Silani IV.

Four small craft had emerged from hatches in the aft hexagons of the Zhirrzh warship her Sigma Five group was harassing.

Returning from the newly secured Beta Aquilae Sector, Roderick's flagship had still had its inner field activated as it passed the orbits of Sigma Draconis' outermost planets, and could therefore receive tachyon transmissions from Prometheus as soon as the planet's sensors had the ship pinpointed.

He'd come to know the child, the jungle cult leader, and the demon of the Sigma Field, as well as the beingness of the elemental ogre, Maamo.

There are three portable sigmas all charged and ready to hang around my royal neck when I decide to go to sleep and I can't help thinking how a beam from an X-zapper could slice through those shields like a sgian dhu through a goddam clootie dumpling .

Divers military buoyancy compensator and a Sigma Systems console with depth gauge, air pressure gauge, compass and dive timer.

After the man had jotted down the information, Frank and Joe drove directly to the Delta Sigma fraternity house.

As it is, we must rebuild his Rho quadrants almost from scratch, and there is collateral damage in Sigma -One, Lambda-Four and Pi-Three.

Over the last few days, she had studied the Delta Sigma IV problem to find out what had turned a cure for a genetic disorder into a poison.

Ghilardi was convinced he held the key that would awaken these dormant powers in any human, be they sigma cum laude or a hod carrier.

Now the inverse sine was the same sigma, but left-to-right reflected so that it started with the horizontal line with the value underneath, and then the sigma.

And as he looked ahead without enthusiasm to a protracted wait here at the edge of Sigma 1212’s violent veil of space storms, he regretted not being able to while away the idle hours getting to know Kera more intimately.