"Perchloroethylene" Natural Recordings by Native Speakers
Perchloroethylene is a chlorinated hydrocarbon solvent commonly used as a cleaning agent in dry cleaning. It is also known as PCE and tetrachloroethylene. As a solvent, it is effective at dissolving and removing oil-based stains and other substances from clothing and fabrics. However, it has raised health concerns due to its ability to cause respiratory problems and other toxic effects in humans.
Perchloroethylene
A Percheron is a breed of draught horse originating from Perche in north-central France. They are known for their muscular build, distinctive bold and expressive head, and their gentle and intelligent nature. Percherons are often used for driving and riding, and are especially popular for their impressive appearance in horse shows and competitions.
Perches are thin branches or supports, typically horizontal or slightly sloping, used to provide a resting place for birds, especially those that alight or perch on their way to or from flight.
A perchlorate is a type of inorganic compound that is made up of chlorine, oxygen, and a metal. It is typically found in nature as a mineral, but it can also be produced synthetically. Perchlorates are widely used in various industries, including the production of fireworks, fertilizers, and medications.<br><br>In its salt form, perchlorate can be particularly potent and potentially toxic, particularly in large doses. High levels of perchlorate in the body can cause a range of health problems, including altered thyroid function, reproductive issues, and increased risk of cancer.<br><br>Perchlorates are commonly found in polluted water sources, including tap water, and can also be present in food, particularly if it has been processed or packaged using perchlorate-containing materials.
Perchloric acid is a strong acid with the formula HClO4. It is commonly used in laboratories to prepare oxidation reactions and to clean glassware. The term "perchloric" can also refer to any salt or ester of perchloric acid.
Perchlorinate: To treat or prepare something with perchloric acid or a salt of perchloric acid, often used to create a sterile or clean environment, such as disinfecting surfaces or sterilizing equipment. For example, "The hospital staff had to perchlorinate the operating room before performing the surgery to ensure a safe and sterile environment."
Perchloroethane is a chlorinated hydrocarbon compound with the chemical formula C2H3Cl3. It is a colorless, non-flammable liquid that is widely used as a cleaning solvent, degreaser, and pesticide.
Perchromic refers to a chromogenic reaction that is primary, or occurs first in a chemical reaction sequence.
Percina is a genus of fish in the family Percidae, commonly known as darters. It includes about 170 species of small to medium-sized fish found in North America, typically living in rocky or sandy streams and rivers.
Percipience refers to the ability to understand and discern subtle hints, clues, or nuances that are often not immediately apparent to others. It involves having a keen mind, being perceptive, and being able to make accurate judgments or connections.
Percival is a proper noun and refers to a name borne by several notable individuals, particularly in the Arthurian legends. Specifically, Sir Percival is a legendary knight in King Arthur's court, who appears as one of the Fisher King's knights in the tales. He is notable for being one of the few knights who achieves the Holy Grail. The name Percival is derived from the Cornish language, meaning "pierce valley" or "thorough valley".