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.

Farlex Partner Medical Dictionary © Farlex 2012

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.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.

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

It will approach the planet from a distance of 0.12853 astronomical units or about 12 million miles away.

NASA Tracker: 292-Foot And 154-Foot Asteroids Skim Earth On Tuesday

During its approach, the asteroid will be about 0.04850 astronomical units or about 4.5 million miles away.

Two Asteroids Skim Earth To Start September

"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 asteroid will approach the planet from a distance of 0.01511 astronomical units or about 1.4 million miles away.

NASA: Two Asteroids Skim Earth This Weekend To End August

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.

Rocky finding: evidence of extrasolar asteroid belt

During its approach, the asteroid will be about 0.01457 astronomical units or roughly 1.3 million miles from the planet's center.

NASA Asteroid Tracker: Two Tiny NEOs Approaching Earth Friday

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.

Exoplanets: 5th planet

During its approach, the asteroid will be about 0.01411 astronomical units or roughly 1.3 million miles from the planet's center.

Two Large Asteroids To Zip Past Earth On Wednesday

These dust bands reside at 6.4, 16, and 30 astronomical units (AU) from the star.

Planet signs? Sifting a dusty disk

During this time, it flew past the planet from a distance of 0.05961 astronomical units or roughly 5.5 million miles away.

NASA Asteroid Tracker: 361-Foot NEO To Zip Past Earth Today

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.