Category: L
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Lissencephalous
To a condition in which the brain is smooth owing to failure of cerebral gyri to develop.
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Lisfranc’s ligament
The ligament joining the first cuneiform bone of the ankle to the second metatarsal.
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Lisfranc’s dislocation
A dislocation of the tarsometatarsal joints of the foot by direct or indirect mechanisms. Accompanying fracture is common.
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Lisch nodule
A melanocytic hamartoma projecting from the surface of the iris of the eye. It is a well-defined, dome-shaped elevation that is clear to yellow or brown. These growths, which do not cause ophthalmological complications, may be seen without magnification, but examination with use of a slit lamp is needed to differentiate them from nevi of…
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Liquor folliculi
The fluid contained in the graafian follicle.
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Liquor amnii
The amniotic fluid, a clear watery fluid that surrounds the fetus in the amniotic sac. The fluid in which the fetus is suspended within its protective membranes inside the womb. Its primary roles are to safeguard the baby from external harm, regulate the baby’s temperature, and enable unrestricted movement. During labor, the fluid-filled membranes in…
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Liquid crystal display
A type of electronic display unit used on devices from watches to clinical laboratory instruments. It is very efficient and consumes little energy or power.
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Liquid-based cytology
A means of performing a Papanicolaou test in which the head of the plastic spatula used to obtain cells from the endocervix is inserted directly into a vial containing a fluid cellular preservative. The vial is spun in the laboratory, and a pellet of pure cells is obtained. This cellular layer is then deposited on…
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Liquid air therapy
The therapeutic application of air that is so cold as to be liquefied.
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Liquefacient
An agent that converts a solid into a liquid.