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.
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.
These coziest of stellar companions are between zero and three astronomical units apart.
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.
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.
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.
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.
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.
The disk spans somewhere between 760 and 980 astronomical units.
02 astronomical units (AU) when Mercury, the closest planet to the Sun, is at 0.
1 astronomical units (AU)--slightly greater than Jupiter's distance from the sun (SN: 6/16/01, p.
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.