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# sedimentary

«sedimentary» in Mova's school dictionary: **rock made from layers of sand, mud, shells or tiny bits…** — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

### part of speech

adjective (sedimentary)

### meaning for a pupil

1) Sedimentary rock is rock made from layers of sand, mud, shells or tiny bits of other rock that are pressed together over a very long time. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#m1)

2) Sedimentary means made from sediment, the bits that settle at the bottom of water. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#m2)

### sense in the lessons

In science lessons there are three main types of rock: igneous (from melted rock), sedimentary and metamorphic (changed by heat and pressure). Sandstone, limestone, chalk and shale are sedimentary rocks; fossils are mostly found in them. In the rock cycle, rocks are worn down, carried by rivers and laid down as layers.

### examples

- Sandstone is a sedimentary rock. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#x1)
- Fossils are often found in sedimentary rocks. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#x2)
- The cliff showed many sedimentary layers. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#x3)
- Chalk is a soft sedimentary rock made of tiny shells. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#x4)
- Sedimentary rocks form at the bottom of seas and lakes. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#x5)
- The oldest layers are at the bottom of sedimentary rock. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/#x6)

### note

A science word; no comparative. Related: sediment (the bits), sedimentation (the settling). Sedimentary rocks are often softer and can crumble; igneous rocks like granite are usually harder.

### In the corpora

- [All rocks belong to three families: igneous, sedimentary and metamorphic.](https://md.mova.elamur.ai/free/en/corpora/school/geography/48-igneous-rocks-and-the-rock-cycle/12/)
- [Sedimentary rocks form when layers of sand, mud, shells or other bits are buried, pressed and cemented together.](https://md.mova.elamur.ai/free/en/corpora/school/geography/49-sedimentary-and-metamorphic-rocks/5/)
- [In undisturbed sedimentary rock, the lowest layers are the oldest.](https://md.mova.elamur.ai/free/en/corpora/school/geography/49-sedimentary-and-metamorphic-rocks/6/)
- [Shale and mudstone are made of very fine mud that settled in calm water, and they are the most common sedimentary rocks.](https://md.mova.elamur.ai/free/en/corpora/school/geography/49-sedimentary-and-metamorphic-rocks/9/)
- [Most fossils are found in sedimentary rocks, because living things were buried in the layers.](https://md.mova.elamur.ai/free/en/corpora/school/geography/49-sedimentary-and-metamorphic-rocks/11/)

### Trees and pragmatics

[Every meaning and example of «sedimentary» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/sedimentary/), each sentence with its dependency tree and frames.