a 10
To the definitions already published I add that 'a' is also a preposition, an area symbol, or the prefix for atto ("factor of 10 8315;¹ 8312;"); and 'A' is the letter that in biochemistry represents adenine and alanine, is the symbol of the ampere , is the equivalent to decimal 10 in bases greater than 10, or the musical note in Anglo-Saxon notation.
Like 0
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list