"Perm" Natural Recordings by Native Speakers
The word "perm" is a shortened form of "permanent wave", which is a type of hair styling procedure that uses chemicals to change the texture and shape of the hair.
Perlite is a type of volcanic glass that is used as a lightweight aggregate in construction materials, such as building insulation, and also as a soil amendment in horticulture. It is created when obsidian lava is rapidly cooled, which causes it to expand like popcorn and form a lightweight, porous, and inert material. Perlite is often used to improve soil drainage and aeration, increase water retention, and reduce soil compaction. It is also used as a substrate in hydroponic systems and as an additive in some types of concrete.
Perilous refers to something that is dangerous or menacing, often in a subtle or insidious way. It can describe a situation or place where there is a high risk of harm, injury, or even death.
Permafrost refers to a type of soil or rock that remains frozen for two or more consecutive years. It is commonly found in Arctic and sub-Arctic regions, where temperatures are typically below freezing for long periods of time. Permafrost can be hundreds or even thousands of years old and can be several meters thick. It is formed when the ground remains frozen for a long time, causing the soil and underlying rock to become compact and rigid. Permafrost plays an important role in the ecosystem, providing habitat for certain plants and animals that are adapted to the frozen conditions.
Permanent refers to something that is lasting or remaining unchanged for a long time or forever. It means that something is stable, unshakeable, and not subject to change. For example, a permanent address is a residence that one has not changed in a long time, often for many years. A permanent solution is one that solves a problem once and for all, without the need for additional action.