Definify.com

Webster 1913 Edition


Muscle

Mus′cle

(mŭs′’l)
,
Noun.
[F., fr. L.
musculus
a muscle, a little mouse, dim. of
mus
a mouse. See
Mouse
, and cf. sense 3 (below).]
1.
(Anat.)
(a)
An organ which, by its contraction, produces motion.
See Illust. of Muscles of the Human Body, in Appendix.
(b)
The contractile tissue of which muscles are largely made up.
☞ Muscles are of two kinds, striated and nonstriated. The striated muscles, which, in most of the higher animals, constitute the principal part of the flesh, exclusive of the fat, are mostly under the control of the will, or voluntary, and are made up of great numbers of elongated fibres bound together into bundles and inclosed in a sheath of connective tissue, the
perimysium
. Each fiber is inclosed in a delicate membrane (the
sarcolemma
), is made up of alternate segments of lighter and darker material which give it a transversely striated appearance, and contains, scattered through its substance, protoplasmic nuclei, the so-called
muscle corpuscles
.
The nonstriated muscles are involuntary . They constitute a large part of the walls of the alimentary canal, blood vessels, uterus, and bladder, and are found also in the iris, skin, etc. They are made up of greatly elongated cells, usually grouped in bundles or sheets.
2.
Muscular strength or development;
as, to show one’s
muscle
by lifting a heavy weight
.
[Colloq.]
3.
[AS.
muscle
, L.
musculus
a muscle, mussel. See above.]
(Zool.)
See
Mussel
.
Muscle curve
(Physiol.)
,
contraction curve of a muscle; a myogram; the curve inscribed, upon a prepared surface, by means of a myograph when acted upon by a contracting muscle. The character of the curve represents the extent of the contraction.

Webster 1828 Edition


Muscle

MUS'CLE

,
Noun.
[L. musculus, a muscle,and a little mouse.]
1.
In anatomy,the muscles are the organs of motion, consisting of fibers or bundles of fibers inclosed in a thin cellular membrane. The muscles are susceptible of contraction and relaxation, and in a healthy state the proper muscles are subject to the will, and are called voluntary muscles. But other parts of the body, as the heart, the urinary bladder, the stomach, &c. are of a muscular texture, and susceptible of contraction and dilatation, but are not subject to the will, and are therefore called involuntary muscles. The red color of the muscles is owing to the blood vessels which they contain. The ends of the muscles are fastened to the bones which they move, and when they act in opposition to each other, they are called antagonists.
Muscles are divided into the head, belly and tail. The head is the part fixed on the immovable joint called its origin, and is usually tendinous; the belly is the middle fleshy part,which consists of the true muscular fibers; the tail is the tendinous portion inserted into the part to be moved, called the insertion; but in the tendon, the fibers are more compact than in the belly of the muscle,and do not admit the red globules.
2.
A bivalvular shell fish of the genus Mytilus; sometimes written mussel.

Definition 2024


muscle

muscle

See also: musclé

English

Alternative forms

  • muskle

Noun

muscle (countable and uncountable, plural muscles)

  1. (uncountable) A contractile form of tissue which animals use to effect movement.
    Muscle consists largely of actin and myosin filaments.
  2. (countable) An organ composed of muscle tissue.
  3. (uncountable, chiefly in the plural) A well-developed physique, in which the muscles are enlarged from exercise.
    • 2008, Lou Schuler, "Foreward", in Nate Green, Built for Show, page xii
      The fact that I was middle-aged, bald, married, and raising girls instead of chasing them didn't really bother me. Muscles are cool at any age.
  4. (uncountable, figuratively) Strength, force.
    • 2010, Adam Quinn, US Foreign Policy in Context, page 81
      The lesson to be drawn from the events of 1914, to Roosevelt's mind, was that civilization needed muscle to defend it, not just solemn words.
    • 2013, John D. MacDonald, The Long Lavender Look, page 15
      It was going to take muscle to pluck Miss Agnes out of the canal.
  5. (uncountable, figuratively) Hired strongmen or bodyguards.
    • 1985Lance Parkin, The Infinity Doctors, p 34
      It was easy enough to dodge him, let him crash into the floorboards. Peltroc knew that his priority was the leader, not the hired muscle.

Derived terms

Translations

See also

Verb

muscle (third-person singular simple present muscles, present participle muscling, simple past and past participle muscled)

  1. To use force to make progress, especially physical force.
    He muscled his way through the crowd.
    • 1988, Steve Holman, "Christian Conquers Columbus", Ironman 47 (6): 28-34.
      Hensel and Wilson hit a series of leg shots simultaneously as Christian muscles between them with Quinn right on his heels.

Derived terms

Translations

Related terms

Homophones


Catalan

Pronunciation

  • IPA(key): /ˈmuskɫə/

Noun

muscle m (plural muscles)

  1. shoulder

Synonyms


French

Etymology

From Middle French muscle, from Latin mūsculus (a muscle, literally little mouse). See also the inherited moule.

Pronunciation

  • IPA(key): /myskl/

Noun

muscle m (plural muscles)

  1. muscle (contractile tissue, strength)

Verb

muscle

  1. first-person singular present indicative of muscler
  2. third-person singular present indicative of muscler
  3. first-person singular present subjunctive of muscler
  4. first-person singular present subjunctive of muscler
  5. second-person singular imperative of muscler

Middle French

Noun

muscle m (plural muscles)

  1. (anatomy) muscle

Norman

Etymology

From Latin mūsculus (a muscle, literally little mouse), from Ancient Greek μῦς (mûs, mouse, muscle, mussel).

Noun

muscle m (plural muscles)

  1. (anatomy) muscle