noun. 1  the sum of the physical, chemical, and biological changes that take place in sediments as they become consolidated into rocks, including compaction and cementation, but excluding weathering and metamorphic changes.( 2 chemistry) recrystallization of a solid to form large crystal grains from smaller ones.oun. 1  the sum of the physical, chemical, and biological changes that take place in sediments as they become consolidated into rocks, including compaction and cementation, but excluding weathering and metamorphic changes.
The definition of proportionate is having a proper relation between parts, such as size or ratio. An example of someone proportionate is a woman whose top half is sized in relation to her bottom half; proportionate size. Proportionate is defined as to even something out.
A ratio is one thing compared to or related to another thing; it is just a statement or an expression. A proportion is two ratios that have been set equal to each other; a proportion is an equation that can be solved. When I say that a proportion is two ratios that are equal to each other, I mean this in the sense of two fractions being equal to each other. For instance, 5/10 equals 1/2. Solving a proportion means that you are missing one part of one of the fractions, and you need to solve for that missing value.