1A Explained

1A or 1-A may refer to:

Arts and entertainment

1A (comics), a comic book robot
1A (radio program), an American radio program

Politics

- First Amendment (disambiguation), the first amendment of various legislation

Science and technology

Group 1A, an obsolete designation for the group 1 elements
AMY1A, a human gene
Alpha-1A adrenergic receptor, a human gene
Interferon beta-1a, a drug
Meltwater pulse 1A, a period of rapid post-glacial sea level rise, 13,500–14,700 years ago
Melatonin receptor 1A, a human gene
Metallothionein 1A, a human gene
MH-1A, a nuclear power reactor and the first floating nuclear power station
Vasopressin receptor 1A, a major receptor type for vasopressin

Sports

Croatian 1A Volleyball League
1. A SKL, the 2002–2006 name of Premier A Slovenian Basketball League

Transportation, military and space

Adcox 1-A, an American 1929 biplane
Astra 1A, a 1988 satellite
Class 1-A, an American military service classification
Little Joe 1A, a 1959 unmanned NASA launch
Mercury-Redstone 1A, a 1969 NASA mission
Packard 1A-1500, a 1929 piston aircraft engine
Shin Meiwa US-1A, a Japanese anti-submarine warfare aircraft
Sisu 1A, an American 1950s sailplane
Türksat 1A, a Turkish satellite
List of highways numbered 1A

See also