AR

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does AR mean? 

• AR (noun)
  The noun AR has 3 senses:

1. a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

2. a unit of surface area equal to 100 square meters

3. a state in south central United States; one of the Confederate states during the American Civil War

  Familiarity information: AR used as a noun is uncommon.

 Dictionary entry details 

• AR (noun)

Sense 1

Meaning:

A colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

Classified under:

Nouns denoting substances

Synonyms:

Ar; argon; atomic number 18

Hypernyms ("Ar" is a kind of...):

chemical element; element (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)

argonon; inert gas; noble gas (any of the chemically inert gaseous elements of the helium group in the periodic table)

Holonyms ("Ar" is a substance of...):

air (a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of)

Sense 2

Meaning:

A unit of surface area equal to 100 square meters

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

ar; are

Hypernyms ("ar" is a kind of...):

area unit; square measure (a system of units used to measure areas)

Holonyms ("ar" is a part of...):

hectare ((abbreviated 'ha') a unit of surface area equal to 100 ares (or 10,000 square meters))

Sense 3

Meaning:

A state in south central United States; one of the Confederate states during the American Civil War

Classified under:

Nouns denoting spatial position

Synonyms:

AR; Ark.; Arkansas; Land of Opportunity

Instance hypernyms:

American state (one of the 50 states of the United States)

Meronyms (parts of "AR"):

Texarkana (a town in southwest Arkansas on the Texas border adjacent to Texarkana, Texas)

White; White River (a tributary of the Mississippi River that flows southeastward through northern Arkansas and southern Missouri)

Saint Francis; Saint Francis River; St. Francis; St. Francis River (a tributary of the Mississippi River that rises in Missouri and flows southeastward through Arkansas)

Ozark Mountains; Ozark Plateau; Ozarks (an area of low mountains in northwestern Arkansas and southeastern Missouri and northeastern Oklahoma)

Ouachita; Ouachita River (a river that rises in western Arkansas and flows southeast into eastern Louisiana to become a tributary of the Red River)

Arkansas; Arkansas River (a river that rises in the Rocky Mountains in Colorado and flows southeast through Kansas and Oklahoma and through Arkansas to become a tributary of the Mississippi River)

Hot Springs National Park (a national park in Arkansas featuring ancient hot springs; bathing is said to have therapeutic effects)

Pine Bluff (a town in southeast central Arkansas on the Arkansas River)

capital of Arkansas; Little Rock (the state capital and largest city of Arkansas in the central part of Arkansas on the Arkansas River)

Jonesboro (a town in northeast Arkansas)

Hot Springs (a town in west central Arkansas; a health resort noted for thermal springs)

Fort Smith (a town in western Arkansas on the Arkansas River at the Oklahoma border)

Fayetteville (a university town in northwestern Arkansas in the Ozarks)

Holonyms ("AR" is a part of...):

America; the States; U.S.; U.S.A.; United States; United States of America; US; USA (North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776)

Holonyms ("AR" is a member of...):

Confederacy; Confederate States; Confederate States of America; Dixie; Dixieland; South (the southern states that seceded from the United States in 1861)

 Context examples 

In addition, the clioquinol-copper complex appears to decrease the expression of androgen receptors (AR) in human copper-enriched prostate cancer cells.

(Clioquinol, NCI Thesaurus)

Cancer cells that are AR+ may need androgens to grow.

(AR+, NCI Dictionary)

Human AR wild-type allele is located within Xq11.2-q12 and is approximately 180 kb in length.

(AR wt Allele, NCI Thesaurus)

AR antagonist ODM-201 binds to ARs in target tissues; subsequently, inhibiting androgen-induced receptor activation and facilitating the formation of inactive complexes that cannot translocate to the nucleus.

(AR Antagonist ODM-201, NCI Thesaurus)

Cyproterone binds the androgen receptor (AR), thereby preventing androgen-induced receptor activation in target tissues and inhibiting the growth of testosterone-sensitive tumor cells.

(Cyproterone acetate, NCI Thesaurus)

An orally bioavailable, organic, non-steroidal small molecule targeting the androgen receptor (AR) with potential antineoplastic activity.

(Enzalutamide, NCI Thesaurus)

Proposed model for b2-AR- and prostanoid-receptor-mediated PLC and calcium signaling.

(Phospholipase C-Epsilon Signaling Pathway, NCI Thesaurus/BIOCARTA)

The receptors for estrogen (ER), progestin (PR), androgen (AR) and others are steroid hormone receptors, which are part of a large family of ligand-inducible transcription factors.

(Pelp1 Estrogen Receptor Pathway, NCI Thesaurus/BIOCARTA)

Upon administration, 18F-FDHT binds to the androgen receptor (AR).

(Fluorine F 18 FDHT, NCI Thesaurus)

An androgen receptor (AR) antagonist with potential antineoplastic and anti-androgenic activities.

(AR Antagonist BMS-641988, NCI Thesaurus)