A CONSIDERABLE NUMBER is a large amount of something, usually referring to a quantity that is greater than average. The term can be broken down into three words: 'CONSIDERABLE, ' 'NUMBER, ' and 'MASS.' The first word, 'CONSIDERABLE, ' means large in size or amount. The second word, 'NUMBER, ' refers to the count of something. The third word, 'MASS, ' is a synonym for MANY or MUCH, meaning a large quantity of something. Together, these three words form the phrase 'CONSIDERABLE NUMBER, ' which describes a large amount of something.