noun \ˈärm\

Definition of ARM

:  a human upper limb; especially :  the part between the shoulder and the wrist
:  something like or corresponding to an arm: as
a :  the forelimb of a vertebrate
b :  a limb of an invertebrate animal
c :  a branch or lateral shoot of a plant
d :  a slender part of a structure, machine, or an instrument projecting from a main part, axis, or fulcrum
e :  the end of a ship's yard; also :  the part of an anchor from the crown to the fluke — see anchor illustration
f :  any of the usually two parts of a chromosome lateral to the centromere
:  an inlet of water (as from the sea)
:  a narrow extension of a larger area, mass, or group
:  power, might <the long arm of the law>
:  a support (as on a chair) for the elbow and forearm
:  sleeve
:  the ability to throw or pitch a ball well; also :  a player having such ability
:  a functional division of a group, organization, institution, or activity <the logistical arm of the air force>
arm·less \ˈärm-ləs\ adjective
arm·like \-ˌlīk\ adjective
arm in arm
:  with arms linked together

Origin of ARM

Middle English, from Old English earm; akin to Latin armus shoulder, Sanskrit īrma arm
First Known Use: before 12th century

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral

Rhymes with ARM



: to provide (yourself, a group, a country, etc.) with weapons especially in order to fight a war or battle

: to provide (someone) with a way of fighting, competing, or succeeding

: to make (a bomb, weapon, etc.) ready for use

Full Definition of ARM

transitive verb
:  to furnish or equip with weapons
:  to furnish with something that strengthens or protects <arming citizens with the right to vote>
:  to equip or ready for action or operation <arm a bomb>
intransitive verb
:  to prepare oneself for struggle or resistance <arm for combat>

Examples of ARM

  1. They armed the men for battle.
  2. The group of fighters was armed by a foreign government.
  3. The two countries have been arming themselves for years, but now they have agreed to disarm.
  4. We armed ourselves with the tools we would need to survive in the forest.
  5. They arm people with accurate information.
  6. arming women with the right to vote
  7. Once the bomb has been armed, we have five minutes to escape.

Origin of ARM

Middle English armen, from Anglo-French armer, from Latin armare, from arma weapons, tools; akin to Latin ars skill, Greek harmos joint, arariskein to fit
First Known Use: 12th century


noun, often attributive

Definition of ARM

a :  a means (as a weapon) of offense or defense; especially :  firearm
b :  a combat branch (as of an army)
c :  an organized branch of national defense (as the navy)
a :  the hereditary heraldic devices of a family
b :  heraldic devices adopted by a government
a :  active hostilities :  warfare <a call to arms>
b :  military service
up in arms
:  aroused and ready to undertake a fight or conflict

Origin of ARM

Middle English armes (plural) weapons, from Anglo-French, from Latin arma
First Known Use: 13th century



Definition of ARM


Other Anthropology Terms

ectomorph, ethnography, prehistory, yurt



Definition of ARM

adjustable rate mortgage

Other Economics Terms

actuary, compound interest, globalization, indemnity, portfolio, rentier, stagflation, usurer


noun \ˈärm\   (Medical Dictionary)

Medical Definition of ARM

a :  a human upper limb b :  the part of the human upper limb between the shoulder and the wrist; also :  brachium
a :  the forelimb of a vertebrate other than a human being b :  a limb of an invertebrate animal c :  any of the usually two parts of a chromosome lateral to the centromere


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