What does the acronym PM mean?
PM: Plant Miscellaneous: PM: Parallel Track Multiunit (US DoD) PM: Précompte Mobilier (French) ...
What do the abbreviations AM and PM mean?
What Do These Terms Mean? “AM” and “PM” are both abbreviations of Latin terms and refer to a specific time of day: AM ( ante meridiem) means “before noon,” so it refers to the morning. PM ( post meridiem) means “after noon,” so it refers to any time after midday. When using a 12-hour clock, then, these terms clarify the time we ...
What is pm abbreviation for?
That’s why, in the 12-hour system, all times from midnight onward use this designation. PM stands for “post meridiem,” meaning “after noon” or “after midday,” and as such applies to the times from noon onward. English-speaking countries have been using the “AM” and “PM” abbreviations since the 17th century.
What does pm mean in medical terms?
Precision medicine (PM) is a rapidly evolving development in healthcare in which physicians and other caregivers consider differences in genes, socioeconomic status and lifestyles when devising treatment regimens for patients. The field is also sometimes referred to as personalized, or individualized medicine, although precision medicine is ...
What does pm stand for in science measurement?
The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to 1×10−12 m, or one trillionth (11000000000000) of a metre, which is the SI base unit of length.
What does pm stand for in biology?
Plasma membrane, also known as cell membrane.
What is P M )?
P.m. is an abbreviation of post merīdiem, meaning—you guessed it—“after midday.” These two terms help keep ambiguity at bay in the 12-hour time system.
What is the full name of PM?
Narendra ModiAwardsList of state honoursSignatureWebsitePersonal PM India officialNickname(s)see article41 more rows
Is PM or PM correct?
The first and most common way to write them is with lowercase “a.m.” and “p.m.” This way requires periods, and both Chicago Style and AP Style recommend this way of writing the abbreviations.
What Is Pm, and How Does It Get Into The Air?Size Comparisons For PM Particles
PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air....
What Are The Harmful Effects of Pm?
Particulate matter contains microscopic solids or liquid droplets that are so small that they can be inhaled and cause serious health problems. Par...
What Is Being Done to Reduce Particle Pollution?
EPA regulates inhalable particles. Particles of sand and large dust, which are larger than 10 micrometers, are not regulated by EPA. EPA’s national...
What is PM in the air?
PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye.
What are the particles that can be seen with the naked eye?
Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope. Particle pollution includes: PM2.5 : fine inhalable particles, with diameters that are generally 2.5 micrometers and smaller.
How small is PM2.5?
PM2.5 : fine inhalable particles, with diameters that are generally 2.5 micrometers and smaller. How small is 2.5 micrometers? Think about a single hair from your head. The average human hair is about 70 micrometers in diameter – making it 30 times larger than the largest fine particle.
How deep can particles get into the lungs?
Some particles less than 10 micrometers in diameter can get deep into your lungs and some may even get into your bloodstream. Of these, particles less than 2.5 micrometers in diameter, also known as fine particles or PM 2.5, pose the greatest risk to health.
Why use air quality alerts?
You can use air quality alerts to protect yourself and others when PM reaches harmful levels:
Where do PM particles come from?
Some are emitted directly from a source, such as construction sites, unpaved roads, fields, smokestacks or fires.
Is sand regulated by the EPA?
Particles of sand and large dust, which are larger than 10 micrometers, are not regulated by EPA. EPA’s national and regional rules to reduce emissions of pollutants that form PM will help state and local governments meet the Agency’s national air quality standards. Learn about how air quality standards help reduce PM.
