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unidentified flying object

(Encyclopedia) unidentified flying object or UFO, an object or light reportedly seen in the sky whose appearance, trajectory, and general dynamic and luminescent behavior do not readily suggest a…

Salih

(Encyclopedia) Salih, Qur'anic non-biblical prophet, sent to the people of Thamud in Arabia. His call for monotheism is said to have been met with scorn and rejection. Having killed a camel sent as a…

sunstone

(Encyclopedia) sunstone. 1 Crystal mineral thought by some to have been used by the Vikings as an aid to navigation, especially in conditions of low visibility due to clouds or fog when the position…

stargazer

(Encyclopedia) stargazer, common name for any of several species of marine fishes of the family Uranoscopidae, found in southern waters, and having the mouth, nostrils, and eyes set high in the head…

sign language

(Encyclopedia) CE5 Manual alphabet sign language, gestural communication used as an alternative or replacement for speech. Sign languages resemble oral languages in every way other than their…

homosexuality

(Encyclopedia) homosexuality, a term created by 19th cent. theorists to describe a sexual and emotional interest in members of one's own sex. Today a person is often said to have a homosexual or a…

stem cells

(Encyclopedia) stem cells, unspecialized human or animal cells that can produce mature specialized body cells and at the same time replicate themselves. Embryonic stem cells are derived from a…

ford

(Encyclopedia) ford, shallow place in a body of water, especially a river, that may be crossed by wading. Around the crossings habitually forded, cities sprang up; hence fords came to be the sites of…

goldenrod

(Encyclopedia) goldenrod, any species of the large genus Solidago of the family Asteraceae (aster family), chiefly North American weedy herbs. They have small yellow flowers clustered, often in…

goldfish

(Encyclopedia) goldfish, freshwater fish, genus Carassius, of the family Cyprinidae, popular in aquariums and ponds. Native to China, it was first domesticated centuries ago from the wild form, an…