noun. To the; at the; with the: the dative of the French definite article, occurring in some phrases frequently used in English, as au fait, au fond, au revoir, etc.

noun. The chemical symbol of gold (L., aurum).

noun. A common English digraph representing generally the sound of “broad a” (â), but often also ä.

noun. a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia

noun. a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers)

"Even the churned foam from a paddle wheel is _café au lait_ with what a blue-jacket contemptuously referred to as "a little more of the _au lait!"

astronomy unit  

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ay