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- Dictionaryrare/rɛː/
adjective
- 1. (of an event, situation, or condition) not occurring very often: "a rare genetic disorder" Similar Opposite
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1 day ago · Narwhal. The narwhal ( Monodon monoceros) is a medium-sized toothed whale native to the Arctic Circle. As the only member of the genus Monodon, the narwhal is closely related to the beluga whale, and the two species can interbreed. Adults range in body-to-tail length from 3.0 to 5.5 m (9.8 to 18.0 ft) and weigh 800 to 1,600 kg (1,800 to 3,500 ...
2 hours ago · A honey bee (also spelled honeybee) is a eusocial flying insect within the genus Apis of the bee clade, all native to mainland Afro-Eurasia. After bees spread naturally throughout Africa and Eurasia, humans became responsible for the current cosmopolitan distribution of honey bees, introducing multiple subspecies into South America (early 16th century), North America (early 17th century), and ...
1 day ago · Properties Form and structure Gallium crystals Most metals are shiny and lustrous, at least when polished, or fractured. Sheets of metal thicker than a few micrometres appear opaque, but gold leaf transmits green light. This is due to the freely moving electrons which reflect light. Although most elemental metals have higher densities than nonmetals, there is a wide variation in their ...
2 hours ago · Ambigrams can be constructed in various languages and alphabets, and the notion often extends to numbers and other symbols. It is a recent interdisciplinary concept, combining art, literature, mathematics, cognition, and optical illusions. Drawing symmetrical words constitutes also a recreational activity for amateurs.
1 day ago · Frequency. 2% to 20% of women of childbearing age [8] [13] Polycystic ovary syndrome, or polycystic ovarian syndrome ( PCOS ), is the most common endocrine disorder in women of reproductive age. [14] The syndrome is named after cysts which form on the ovaries of some women with this condition, though this is not a universal symptom, and not the ...
1 day ago · Theria. Marsupialia. Placentalia. A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia ( / məˈmeɪli.ə / ). Mammals are characterized by the presence of milk -producing mammary glands for feeding their young, a neocortex region of the brain, fur or hair, and three middle ear bones.
