Atomic weight

Atomic weight

The sum of the weights of an atom's protons and neutrons, the atomic weight differs between isotopes of the same element.

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Category: Anatomy
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Related terms

atomic weight

Medical devices; Radiology equipment

The mass of an atom, expressed in atomic mass units. For example, the atomic number of helium-4 is 2, the atomic mass is 4, and the atomic weight is 4.00026.

atomic weight

Biology; Cell biology

The sum of the weights of an atom's protons and neutrons, the atomic weight differs between isotopes of the same element.

atomic weight

Engineering; Electronic engineering

1. The mass of a particular atom in atomic mass units (amu). 2. A number characterizing the average mass of individual atoms for a specific isotope of an element. Thus, carbon 12 ...

atomic weight

Physics; General physics

Weighted average of the masses of stable isotopes of an element as they occur in nature, based on the abundance of each isotope of the element and the atomic mass of the isotope ...

atomic weight

Geography; Physical geography

Combined weight of an atom's electrons, protons, and neutrons.

atomic weight

Biology; Ecology

The weighted average of the masses of naturally occurring isotopes of a given element.

foramen caecum

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The dorsum of the tongue is convex and marked by a median sulcus, which divides it into symmetrical halves; this sulcus ends behind, about 2. 5 cm from the root of the organ, in ...

olfactory bulb

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The olfactory bulb is a structure of the vertebrate forebrain involved in olfaction, the perception of odors.

apex

Biology; Anatomy

A narrowed or pointed end of an anatomical structure.

tongue

Biology; Anatomy

The tongue is a muscle on the floor of the mouth that manipulates food for chewing and swallowing (deglutition).

olfactory membrane

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The portion of the nasal mucosa having olfactory receptor cells and olfactory glands.

oesophagus

Biology; Anatomy

The esophagus or oesophagus, sometimes known as the gullet, is an organ in vertebrates which consists of a muscular tube through which food passes from the pharynx to the ...