| mass number |
The mass number (A), also called atomic mass number or nucleon number, is the number of protons and neutrons in an atomic nucleus. The mass number is unique for each isotope of an element and is written either after the element name or as a superscript to the left of an element's symbol. For example, carbon-12 (12C) has 6 protons and 6 neutrons. The full isotope symbol would also have the atomic number (Z) as a subscript to the left of the element symbol directly below the mass number: . ...
출처: en.wikipedia.org/wiki/Mass_number
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| massage |
Massage is the practice of applying pressure or vibration to the soft tissues of the body, including muscles, connective tissue, tendons, ligaments, and joints. A form of therapy, massage can be applied to parts of the body or successively to the whole body, to heal injury, relieve psychological stress, manage pain, improve circulation and relieve tension. ...
출처: en.wikipedia.org/wiki/Massage
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| masseur |
Massage is the practice of applying pressure or vibration to the soft tissues of the body, including muscles, connective tissue, tendons, ligaments, and joints. A form of therapy, massage can be applied to parts of the body or successively to the whole body, to heal injury, relieve psychological stress, manage pain, improve circulation and relieve tension. ...
출처: en.wikipedia.org/wiki/Masseur
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| mastoidectomy |
Mastoidectomy is an operation to remove disease from the bone behind the ear, when medical management is inadequate. There need not be drainage or ear pain for mastoid disease to exist. Sometimes a mastoidectomy is required in order to gain better exposure to the middle ear and attic. Although complications do not often occur, they include persistent ear drainage, infection in the mastoid cavity, and hearing loss which may be permanent. ...
출처: en.wikipedia.org/wiki/Mastoidectomy
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| masturbation |
Masturbation is the manual excitation of the sexual organs, most often to the point of orgasm. It can refer to excitation either by oneself or by another (see mutual masturbation), but commonly refers to such activities performed alone. It is part of a larger set of activities known as autoeroticism, which also includes the use of sex toys and non-genital stimulation. There are also masturbation machines used to simulate intercourse. ...
출처: en.wikipedia.org/wiki/Masturbation
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