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/ˈfälikəl/ Noun 1. A small spherical group of cells containing a cavity. ( 2. A small cavity or sac, such as a hair follicle. ( 3. (Botany) a. A type of primitive dry fruit produced by certain flowering plants. ( b. A kind of fruit formed from a single carpel, that splits to release its seeds. ( 4. (Gynaecology, Physiology) An ovarian follicle, an oocyte surrounded by one or more layers of granulosa cells. As the ovarian follicle develops a cavity forms and it is then termed a Graafian follicle. Any small spherical group of cells containing a cavity.A small sac-like cavity. ( Word origin: From French follicule or directly from Latin folliculus “little bag,” diminutive of follis “bellows, inflated ball,” from PIE *bhol-n-, suffixed form of root *bhel- “to blow,...

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Noun, pl.fontanelles Also spelled as fontanel. 1. Any membranous gap between the bones of the cranium in an infant or fetus. ( 2. A soft membraneous spot on the head of a baby due to incomplete fusion of the cranial bones. ( 3. An anatomical feature on an infant’s skull comprised by any of the soft membranous gaps between the incompletely formed cranial bones of a foetus or an infant. Fontanelles allow for rapid stretching and deformation of the cranium as the brain expands faster than the surrounding bone can grow. ( Word origin: From French fontanelle (16c.), from Old French fontenele “small source, fountain, spring; fontanelle,” diminutive of fontaine “spring” (see...

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/fəˈrāmən/ Noun, pl. foramina (Anatomy) 1. Any opening. Foramina inside the body of humans and other animals typically allow muscles, nerves, arteries, veins, or other structures to connect one part of the body with another. ( 2. An opening, an orifice; a short passage. ( 3. A natural opening or perforation through a bone or a membranous structure. ( Word origin: From Latin foramen “hole, opening, aperture, orifice,” from forare “to...

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