| auxiliary verb: used to represent a phrase structure constituent that may include such verbal elements as tense and mood markers as well as auxiliaries. |
| var. of auxo-, esp. before a vowel: auxin. |
AU abbr.
Latin auris utraque (each ear)
auxo- or aux-
pref.
Increase: auxotroph.
gold  (gōld) Pronunciation Key
Symbol Au A soft, shiny, yellow element that is the most malleable of all the metals. It occurs in veins and in alluvial deposits. Because it is very durable, resistant to corrosion, and a good conductor of heat and electricity, gold is used as a plated coating on electrical and mechanical components. It is also an international monetary standard and is used in jewelry and for decoration. Atomic number 79; atomic weight 196.967; melting point 1,063.0°C; boiling point 2,966.0°C; specific gravity 19.32; valence 1, 3. See Periodic Table. See Note at element. |
AUX
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