AR Science Abbreviation

Argon

Argon is a chemical element with symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble or inert gas. Argon is the third most common gas in the Earth's atmosphere, at 0.93% (9,300 ppm). 

Autosomal Recessive

Autosomal recessive is one of several ways that a trait, disorder, or disease can be passed down through families. An autosomal recessive disorder means two copies of an abnormal gene must be present in order for the disease or trait to develop.

Active Region

Advanced Reactor

American Rivers

Antireflective

Appropriatnon Request

Appsoval Request

Attendance Requirement