The mole (symbol mol) is the unit of measurement for amount of substance, a quantity proportional to the number of elementary entities of a substance. It is a base unit in the International System of Units (SI). One mole contains exactly 6.02214076×1023 elementary entities (approximately 602 sextillion or 602 billion times a trillion), which can be atoms, molecules, ions, or other particles. The number of particles in a mole is the Avogadro number (symbol N0) and the numerical value of the Avogadro constant (symbol NA) expressed in mol-1. The value was chosen based on the historical definition of the mole as the amount of substance that corresponds to the number of atoms in 12 grams of 12C, which made the mass of a mole of a compound expressed in grams numerically equal to the average molecular mass of the compound expressed in daltons. With the 2019 redefinition of the SI base units, the numerical equivalence is now only approximate but may be assumed for all practical purposes.
The Avogadro constant, commonly denoted NA or L, is an SI defining constant with an exact value of 6.02214076×1023 mol-1 (reciprocal moles). It is defined as the number of constituent particles (usually molecules, atoms, or ions) per mole (SI unit) and used as a normalization factor in the amount of substance in a sample. In practice, its value is often approximated as 6.02×1023 mol-1 or 6.022×1023 mol-1. The constant is named after the physicist and chemist Amedeo Avogadro (1776–1856).
A melanocytic nevus is usually a noncancerous condition of pigment-producing skin cells. It is a type of melanocytic tumor that contains nevus cells. Some sources equate the term mole with "melanocytic nevus", but there are also sources that equate the term mole with any nevus form.
Moles are small mammals adapted to a subterranean lifestyle. They have cylindrical bodies, velvety fur, very small, inconspicuous eyes and ears, reduced hindlimbs, and short, powerful forelimbs with large paws adapted for digging.
The family Talpidae includes the moles who are small insectivorous mammals of the order Eulipotyphla. Talpids are all digging animals to various degrees: moles are completely subterranean animals; shrew moles and shrew-like moles somewhat less so; and desmans, while basically aquatic, excavate dry sleeping chambers; whilst the quite unique star-nosed mole is equally adept in the water and underground. Talpids are found across the Northern Hemisphere of Eurasia and North America, and range as far south as the montane regions of tropical Southeast Asia.
The naked mole-rat, also known as the sand puppy, is a burrowing rodent native to the Horn of Africa and parts of Kenya, notably in Somali regions. It is closely related to the blesmols and is the only species in the genus Heterocephalus.
Mole people are homeless people living under large cities in abandoned subway, railroad, flood, sewage tunnels, and heating shafts. The term may also refer to the speculative fiction trope of an entirely subterranean society or a race of humanoid moles.
The European mole is a mammal of the order Eulipotyphla. It is also known as the common mole and the northern mole.
A molar pregnancy, also known as a hydatidiform mole, is an abnormal form of pregnancy in which a non-viable fertilized egg implants in the uterus. It falls under the category of gestational trophoblastic diseases. During a molar pregnancy, the uterus contains a growing mass characterized by swollen chorionic villi, resembling clusters of grapes. The occurrence of a molar pregnancy can be attributed to the fertilized egg lacking an original maternal nucleus. As a result, the products of conception may or may not contain fetal tissue. These molar pregnancies are categorized into two types: partial moles and complete moles, where the term 'mole' simply denotes a clump of growing tissue or a ‘growth'.
Whac-A-Mole is an arcade game. It was created in 1975 by the amusements manufacturer TOGO in Japan, where it was originally known as Mogura Taiji or Mogura Tataki.
The star-nosed mole is a small semiaquatic mole found in moist, low elevation areas in the northern parts of North America. It is the only extant member of the tribe Condylurini and genus Condylura, and it has more than 25,000 minute sensory receptors in touch organs, known as Eimer's organs, with which this hamster-sized mole feels its way around. With the help of its Eimer's organs, it may be perfectly poised to detect seismic wave vibrations.
The subfamily Talpinae, sometimes called "Old World moles" or "Old World moles and relatives", is one of three subfamilies of the mole family Talpidae, the others being the Scalopinae, or New World moles, and the Uropsilinae, or shrew-like moles.
The Mole Man is a supervillain appearing in American comic books published by Marvel Comics. He is depicted as a recurring foe of the Fantastic Four and was the first villain they ever faced. His schemes usually consist of trying to rule the surface of the Earth with the aid of his "Moloids", mole-human hybrids who he rules over.
The blesmols, also known as mole-rats, or African mole-rats, are burrowing rodents of the family Bathyergidae. They represent a distinct evolution of a subterranean life among rodents much like the pocket gophers of North America, the tuco-tucos in South America, or the Spalacidae from Eurasia.
Talpa is a genus in the mole family Talpidae. Among the first taxa in science, Carolus Linnaeus used the Latin word for "mole", talpa, in his Regnum Animale to refer to the commonly known European form of mole. The group has since been expanded to include 13 extant species, found primarily in Europe and western Asia. The European mole, found throughout most of Europe, is a member of this genus, as are several species restricted to small ranges. One species, Père David's mole, is data deficient. These moles eat earthworms, insects, and other invertebrates found in the soil.
Mogera is a genus of mole in the tribe Talpini. They are native to East Asia.
Mole, pronounced[ˈmole], from Nahuatl mōlli meaning "sauce", is a traditional sauce and marinade originally used in Mexican cuisine. In contemporary Mexico the term is used for a number of sauces, some quite dissimilar, including mole amarillo or amarillito, mole chichilo, mole colorado or coloradito, mole manchamantel or manchamanteles, mole negro, mole rojo, mole verde, mole poblano, mole almendrado, mole michoacano, mole prieto, mole ranchero, mole tamaulipeco, mole xiqueno, mole pipián, mole rosa, mole blanco, chimole, guacamole and huaxmole.
Ognev's mole is a species of mammal in the family Talpidae. It occurs in the southeastern coastal area of the Black Sea from northeastern Turkey to Georgia. It inhabits different habitats associated with moist soils in lowland areas. Little information is available about its life history.
The Talysch mole is a species of mammal in the family Talpidae. It is a small member of the family, which outwardly resembles the Levant mole, but is genetically closer to Père David's mole. It is common on the southwest coast of the Caspian Sea, from southern of Azerbaijan through most of the north of Iran. The habitat includes temperate rainforests and scrub areas. There is little information about the life history of the Talysch mole. It was described in 1945, but had long been considered a subspecies of various other Eurasian moles, and was only recognized as a distinct species in the mid-2010s. No surveys have been carried out to quantify the status of the species.
