A.U.

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A.U.

The ungrammatical expansion of this abbreviation, aures unitas, given in many reference works, is entirely without historical foundation. The JCAHO directs that each ear or both ears be written in full to avoid confusion with similar abbreviations.

Abbreviation for auris utraque [L.], each ear or both ears.

A.U.

Abbreviation for auris utraque

each ear or both ears. usage note The ungrammatical expansion of this abbreviation, aures unitas, given in many reference works, is entirely without historical foundation. The JCAHO directs that each ear or both ears be written in full to avoid confusion with similar abbreviations.

References in periodicals archive ?

But as technology advanced, scientists found even more precise ways to set the astronomical unit.

Astronomers Reach Verdict On Distance From Earth To Sun, Finally

By looking at gradual changes in the orbits of a few of the known planets, Iorio calculated that a planet twice as massive as Earth must be at least 500 astronomical units from the sun, according to research in the Oct.

Shadow planet: strange orbits in the Kuiper belt revive talk of a Planet X in the solar system

These coziest of stellar companions are between zero and three astronomical units apart.

Twin-star systems enjoy double sunset

The survey searched a sizable patch of sky--about 220 times the apparent area of the full moon--and was sensitive enough to detect large objects as far as 1,200 astronomical units from the sun.

On the fringe: astronomers look to the kuiper belt for clues to the solar system' history

At hundreds of astronomical units from the star, the density of material in the disk is so low that any small seed of planet would not be able to grow [large] enough before the disk vanishes in a few million years," Lafreniere says.

Astronomers snap extrasolar image: shot may be the first of an exoplanet orbiting a sunlike star

The companion orbits at a distance of 2,500 astronomical units, or about 374 billion kilometers, far enough that light takes a full 11 days to get between them.

Astronomers Find The Coldest Star In The Universe

With an orbital distance of 8 to 15 astronomical units (AU), a Pictoris b is the closest exoplanet to its star that has ever been imaged.

Mass, temperature of exoplanet B Pictoris-b measured

7 astronomical units (1 AU is the average Earth-sun separation), Voyager 2 had at least five encounters with a turbulent region known as the termination shock, the researchers report in the July 3 Nature.

Voyager 2 reports from the edge: bubble surrounding solar system seems to be lopsided

The disk spans somewhere between 760 and 980 astronomical units.

Stellar: massive star forms from disk

02 astronomical units (AU) when Mercury, the closest planet to the Sun, is at 0.

Scientists discover pulsating star that hosts a giant planet

1 astronomical units (AU)--slightly greater than Jupiter's distance from the sun (SN: 6/16/01, p.

Rocky finding: evidence of extrasolar asteroid belt

A bull's-eye disk of dust and gas surrounds the young star HL Tauri, with ringlike gaps 15, 30, and 70 astronomical units from the star.