vacuum extraction, obstetrical
Removal of the foetus from the uterus or vagina at or near the end of pregnancy with a metal traction cup that is attach (more...)
vacuum extractor
Device for producing traction upon the head of a foetus by means of a soft cup held by a vacuum.
Dewar flask
<apparatus> A glass vessel, often silvered, with two walls, the space between which is evacuated; used for maintai (more...)
vacuum headache
Headache due to closure of the frontal sinus.
vacuum pan
A device for growing crystals from solutions by gradually lowering the pressure within the sealed container holding the (more...)
vacuum tube
A glass tube from which the air has been removed, containing two or more electrodes, between which passes an electrical (more...)
vadantes
<ornithology> An extensive artificial group of birds including the wading, swimming, and cursorial birds.
vadum
An occasional elevation from the bottom of a cerebral sulcus nearly obliterating it for a short distance.
vagabond
One who wanders from place to place, having no fixed dwelling, or not abiding in it, and usually without the means of ho (more...)
parasitic melanoderma
Excoriations and melanoderma caused by scratching the bites of the body louse, Pediculus corporis.
