Of or involving the cells of an organization or movement: The assessment of opposition to any totalitarian regime ... is notoriously difficult, for any effective movement must be secretive and cellular (Anthony Sampson). 4. Of or relating to a cellular telephone.
In the past, a human generation has been considered to be 20-25 years. Older genealogical documents will use these numbers. However, genealogical studies have revealed that this is too simplistic and can result in large inaccuracies during statistical calculation.
The Greatest Generation, also known as the G.I. Generation, is the generation that includes the veterans who fought in World War II. They were born from around 1900 through 1924, coming of age during the Great Depression. Journalist Tom Brokaw dubbed this the Greatest Generation in a book of the same name.