It is another of the names by which the Tanakh (sacred writings of Judaism) are known. In Hebrew 1502; 1511; 1512; 1488; (micráa) means "what should be read". By some mistake see micron [note: the measure is not 'mikrá', this would be a transliteration of its Greek origin to know the pronunciation] .
It is a word of Hebrew origin that means to call. It is also used to call the 24 books that make up the Hebrew Bible. Bible, Tanakh, Measure of very small length equivalent to one-millionth of a meter.