What's the difference between arm and lever?

Arm


Definition:

  • (n.) The limb of the human body which extends from the shoulder to the hand; also, the corresponding limb of a monkey.
  • (n.) Anything resembling an arm
  • (n.) The fore limb of an animal, as of a bear.
  • (n.) A limb, or locomotive or prehensile organ, of an invertebrate animal.
  • (n.) A branch of a tree.
  • (n.) A slender part of an instrument or machine, projecting from a trunk, axis, or fulcrum; as, the arm of a steelyard.
  • (n.) The end of a yard; also, the part of an anchor which ends in the fluke.
  • (n.) An inlet of water from the sea.
  • (n.) A support for the elbow, at the side of a chair, the end of a sofa, etc.
  • (n.) Fig.: Power; might; strength; support; as, the secular arm; the arm of the law.
  • (n.) A branch of the military service; as, the cavalry arm was made efficient.
  • (n.) A weapon of offense or defense; an instrument of warfare; -- commonly in the pl.
  • (v. t.) To take by the arm; to take up in one's arms.
  • (v. t.) To furnish with arms or limbs.
  • (v. t.) To furnish or equip with weapons of offense or defense; as, to arm soldiers; to arm the country.
  • (v. t.) To cover or furnish with a plate, or with whatever will add strength, force, security, or efficiency; as, to arm the hit of a sword; to arm a hook in angling.
  • (v. t.) Fig.: To furnish with means of defense; to prepare for resistance; to fortify, in a moral sense.
  • (v. i.) To provide one's self with arms, weapons, or means of attack or resistance; to take arms.

Example Sentences:

  • (1) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
  • (2) The adaptive filter processor was tested for retrospective identification of artifacts in 20 male volunteers who performed the following specific movements between epochs of quiet, supine breathing: raising arms and legs (slowly, quickly, once, and several times), sitting up, breathing deeply and rapidly, and rolling from a supine to a lateral decubitus position.
  • (3) The Pan American Health Organization, the Americas arm of the World Health Organization, estimated the deaths from Tuesday's magnitude 7 quake at between 50,000 and 100,000, but said that was a "huge guess".
  • (4) Hence the major role of the 14-A arm of carboxybiotin is not to permit a large carboxyl migration but, rather to permit carboxybiotin to traverse the gap which occurs at the interface of three subunits and to insinuate itself between the CoA and keto acid sites.
  • (5) Psychiatric morbidity is further increased when adjuvant chemotherapy is used and when treatment results in persistent arm pain and swelling.
  • (6) A tall young Border Police officer stopped me, his rifle cradled in his arms.
  • (7) But the median survival time was 30.7 months in Arm A and 24.5 months in Arm B, and significantly longer in Arm A until 10 months.
  • (8) Learning ability was assessed using a radial arm maze task, in which the rats had to visit each of eight arms for a food reward.
  • (9) They are the E-1 to E-3 pay grades and soldiers in combat arms units.
  • (10) His arm was being held by Muntari who let go of it as he entered the penalty area.
  • (11) Her arm is outstretched in a strong, certain Nazi salute.
  • (12) Reciprocal translocations involving the short arm of acrocentric chromosomes can segregate to produce partial duplications without associated deletions.
  • (13) Journalists should never be a propaganda arm of any government – not in peace and never in war.
  • (14) The Guardian neglects to mention 150,000 privately owned guns or that Palestinians are banned from bearing arms.
  • (15) "It's a dangerous sign to send and it limits our ability to find a diplomatic solution to nuclear arms in Iran," he said.
  • (16) Welcomed with open arms a month ago, Syrians are now attacked on popular television talkshows where they are described as Morsi sympathisers.
  • (17) The increase in the mean resting ankle-arm index 1 year after conventional angioplasty (0.26) was greater than that after laser angioplasty (0.12).
  • (18) Of those, 39 were civilians, 34 armed opposition fighters and 35 members of the state security forces, said the UK-based group.
  • (19) Even regional allies disagree with American priorities about Isis, Biddle noted, which is why Turkey continues to bomb Kurds and Saudi Arabia and the UAE arm groups around the region , most notably in Syria but also in the ruins of Yemen .
  • (20) The night's special award went to armed forces broadcaster, BFBS Radio, while long-standing BBC radio DJ Trevor Nelson received the top prize of the night, the gold award.

Lever


Definition:

  • (a.) More agreeable; more pleasing.
  • (adv.) Rather.
  • (n.) A rigid piece which is capable of turning about one point, or axis (the fulcrum), and in which are two or more other points where forces are applied; -- used for transmitting and modifying force and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures.
  • (n.) A bar, as a capstan bar, applied to a rotatory piece to turn it.
  • (n.) An arm on a rock shaft, to give motion to the shaft or to obtain motion from it.

Example Sentences:

  • (1) In this experiment animals were trained to lever press in two distinctive contexts.
  • (2) Orientation and lever responding were not functionally related.
  • (3) In older stages, the cervical joints rotate according to geometric and lever arm principles.
  • (4) In EastEnders , the mystery surrounding the identity of Kat's secret squeeze continues amid the grinding of narrative levers and the death rattle of overflogged script-horses.
  • (5) Cats were trained to press a lever for 0.5--1.0 ml of milk reward both in the presence and absence of ambient light.
  • (6) Setting out how Britain would have a lever over the rest of the EU to demand repatriation of UK competences, Cameron said: "What's happening in Europe right now is massive change being driven by the existence of the euro.
  • (7) When lever pressing was established, the 2-kHz signal was presented through a speaker adjacent to the response lever according to a different set of variable intertrial intervals.
  • (8) Officials said the changes to the planning rules will mean it is possible to lever in billions of private sector development in low-cost housing.
  • (9) Rats were allowed to bar press on either of two levers (left and right).
  • (10) Knee flexion is synchronized with ankle dorsiflexion by a synchronizer rod and lever.
  • (11) In order to study the interactions between serotonergic mechanism and electrical stimulation of the mesencephalic central gray substance, rats were trained to lever-press for terminating aversive electric stimuli applied at the Periaqueductal gray and adjoining tectum of the mesencephalon.
  • (12) Rats were trained to press a lever to obtain a brief burst of pulses to the lateral hypothalamus.
  • (13) But its original meaning is the practice of using the levers of the state and of government to get difficult things done that otherwise wouldn't happen.
  • (14) Intact rats and rats bearing lesions of the suprachiasmatic nuclei (SCNX rats) were trained to obtain food by pressing either of two levers located on opposite sides of a cylindrical cage.
  • (15) We found that attenuation of lever-pressing and water intake by raclopride were not more separated in dose than after, for example, haloperidol.
  • (16) Young rats weaned at 16 days were taught to press a lever by shaping at 18 days and trained for 11 days (from 20 to 30 days of age) on a fixed-interval 60-sec schedule, at a rate of 5 half-hour sessions per day.
  • (17) In contrast, the selective norepinephrine uptake inhibitors, desipramine and talsupram, and the selective serotonin uptake inhibitor, citalopram, occasioned averages of only 13 to 19% drug-lever responding.
  • (18) When reinforcement was not available, each lever response produced a 0.5-sec green light on the key.
  • (19) Rats implanted with placebo pellets and given access to morphine reestablished lever pressing, while those given access to isotonic saline extinguished their lever pressing.
  • (20) Levels of acetylcholine were significantly elevated in the telencephalon and diencephalon + mesencephalon of rats killed by near-freezing during conditioned suppression of food-reinforced lever pressing, whereas levels of serotonin, dopamine, and norepinephrine were not altered.

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