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 ?
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.
It will approach the planet from a distance of 0.12853 astronomical units or about 12 million miles away.
During its approach, the asteroid will be about 0.04850 astronomical units or about 4.5 million miles away.
"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 asteroid will approach the planet from a distance of 0.01511 astronomical units or about 1.4 million miles away.
They found that the dust is probably confined to a disk with a radius no larger than 6.1 astronomical units (AU)--slightly greater than Jupiter's distance from the sun (SN: 6/16/01, p.
During its approach, the asteroid will be about 0.01457 astronomical units or roughly 1.3 million miles from the planet's center.
Previous observations found that the disk extended from roughly 100 to 310 astronomical units. Astronomers had also found evidence of a halo of small dust grains.
During its approach, the asteroid will be about 0.01411 astronomical units or roughly 1.3 million miles from the planet's center.
These dust bands reside at 6.4, 16, and 30 astronomical units (AU) from the star.
During this time, it flew past the planet from a distance of 0.05961 astronomical units or roughly 5.5 million miles away.
Observations with the Gemini Planet Imager confirm that the giant body that orbits a distant 650 astronomical units from the star HD 106906--more than 10 times Pluto's farthest point from the Sun--was probably flung there from closer in.

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