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Definitions from WordNet

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Myofibril

Definition

A myofibril is a microscopic thread-like structure within muscle fibers that consists of many repeating contractile units called sarcomeres.

Sense 1 - Noun

A myofibril is a fundamental unit of muscle tissue that helps in muscle contraction and movement.

Sample Sentence:

During exercise, the myofibrils within the muscles undergo tension and produce force.

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Sense 2 - Noun

(Local) In zoology, a myofibril refers to a fine fibrillar component in certain organisms, particularly worms, involved in body support and movement.

Sample Sentence:

The myofibrils in earthworms enable them to contract and elongate their bodies for locomotion.

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Sense 3 - Noun

(Popular) In bodybuilding, a myofibril refers to a component of muscle fibers that contribute to muscle size and strength.

Sample Sentence:

Weightlifting exercises like squats and deadlifts help increase the size and density of myofibrils, resulting in muscular growth.

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