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Archives: Dictionary

Fornix

/ˈfôrniks/ Noun, pl. fornices (Anatomy) 1. An archlike structure or fold. (wiktionary.org) 2. Specifically, the arched bundle of fibres or axons at the base of the brain. (wiktionary.org) 3. An arch or fold; as, the fornix, or vault, of the cranium; the fornix, or reflection, of the conjuctiva; esp, two longitudinal bands of white nervous tissue beneath the lateral ventricles of the brain. (biology-online.org) 4. A vaulted or arched structure in the body, in particular. (Google Dictionary) 5. A triangular area of white matter in the mammalian brain between the hippocampus and the hypothalamus. (Google Dictionary) 6. Generally, any arch shaped structure (but often it refers to the arched roof of an anatomical space). (wordnetweb.princeton.edu) Word origin: From Latin fornix “arch, vaulted...

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Fossa

/ˈfäsə/ Noun (Zoology) pl. fossas 1. A mammal endemic to Madagascar (spelled ‘fosa’ in Malagasy and by some authors in English); Giant Fossa (Cryptoprocta spelea), a large, extinct mammalian predator that lived on Madagascar. (wikipedia.org) 2. The genus of the Malagasy civet. (wikipedia.org) 3. A large nocturnal reddish-brown catlike mammal of the civet family, found in the rain forests of Madagascar. (Google Dictionary) (Anatomy) pl. fossae 1. A depression or hollow in a bone or other part of the body. (wikipedia.org) 2. A pit, groove, cavity, or depression, of greater or less depth. (wiktionary.org) 3. A pit, groove, cavity, or depression, of greater or less depth; as, the temporal fossa on the side of the skull; the nasal fossae containing the nostrils in most birds. (biology-online.org) (Geology) 1. A depression on the body of an extraterrestrial body, such as a planet or moon. (wikipedia.org) 2. A long, narrow, shallow depression on the body of an extraterrestrial body, such as a planet or moon. (wiktionary.org) Word origin: From Old French fosse “ditch, grave, dungeon” (12c.), from Latin fossa “ditch,” in full fossa terra, literally “dug earth,” from fem. past participle of fodere “to...

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Fovea centralis

/ˈfōvēə/ Noun, pl. foveae Also generally known as fovea. 1. A part of the eye, located in the center of the macula region of the retina. The fovea is responsible for sharp central vision (also called foveal vision), which is necessary in humans for reading, driving, and any activity where visual detail is of primary importance. (wikipedia.org) 2. A tiny spot located in the macula that is the area of clearest vision on the retina. (biology-online.org) 3. Area consisting of a small depression in the retina containing cones and where vision is most acute. (wordnetweb.princeton.edu) Word origin: From Latin fovea (“ditch,...

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Foveola

Noun, pl. foveolas or foveolae or foveolæ (Anatomy) 1. The center of the fovea in the macula of the eye, approximately 0.35 mm in diameter, containing only cone cells. (wiktionary.org) 2. A yellowish, cone photo receptor filled portion of the human retina located within a region called the macula. The foveola is approximately 0.35 mm in diameter and lies in the center of the fovea and contains only cone cells, and a cone-shaped zone of Müller cells. (wikipedia.org) Word origin: Latin word meaning a little pit (diminutive of Latin...

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