This paper explains the characteristics of Transverse Mercator projections, the relationship of plane grids to USGS map cells, and the reasons DRG's and other USGS digital products are projected on the UTM.
âº If two amounts are proportional, they change at the same rate so that the relationship between them does not change: 1  Weight is proportional to size. 2  How far you go is directly proportional to how fast you go (= as one thing increases, the other increases at exactly the same rate).
Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Contribution(noun) the act of contributing. 2  Contribution(noun) that which is contributed; -- either the portion which an individual furnishes to the common stock, or the whole which is formed by the gifts of individuals.