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.
1. countable noun. 1  A proportion of a group or an amount is a part of it. 2  The proportion of one kind of person or thing in a group is the number of people or things of that kind compared to the total number of people or things in the group. The proportion of women in the profession had risen to 17.3%. The radio station has to include a substantial proportion of classical music.