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: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9

[2x]

: A Aë A- A. Aa Ab Ac Ad Ae Af Ag Ah Ai Aj Ak Al Am An Ao Ap Aq Ar As At Au Av Aw Ax Ay Az

a. testudineus | a.d. | a.e. | a.k.a. | a.m. | a.u. | aa | aaa | aaas | aachen | aah

Table of Contents CIDE DICTIONARY

a.u.

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CIDE DICTIONARY

a.u., n.

the unit of length equal to the mean distance of the Earth from the sun, about 93 million miles (150 million kiometers); -- used almost exclusively in astronomy, or to describe astronomical distances. [WordNet 1.5]

For further exploring for "a.u." in Webster Dictionary Online