head shield

head shield

[′hed ‚shēld]
(invertebrate zoology)
A conspicuous structure arching over the lips of certain nematodes.
References in periodicals archive ?
Contract awarded for 2014 small-scale environmental improvement projects non-traditional markets head shield (earnings) construction and installation
This overhead-suspended system had a curved lead-acrylic head shield (0.
Surprisingly well are represented also such bones of the head shield as nuchal (Nu), lateral (La) and premedian (Prm) plates, and even complete head shields form 21.
They include an unnamed worm; Stanleycaris hirpex, a segmented shrimplike critter known as an anomalocarid; and an arthropod with big eyes dangling on stalks from its head shield.
Chief Large Stockman features genuine coffee-bone handle scales, 440 stainless steel bolsters, liners, pins, blades and a detailed Indian head shield.
Meanwhile, an officer attacked in Mountjoy needs surgery after he was hit by a missile that went through his head shield, shattered his teeth and damaged the bridge of his nose.
Welders wear protective clothing including head shield with protective glass, overalls, apron and gloves.
The notochord penetrated the brain case to the level of the pituitary gland, and a series of extrascapular dermal shoulder girdle bones were attached to the dermal head shield.
We were talking about putting a head shield on the master cylinder.
Overalls, steel toe-capped boots, leather apron, head shield and leather gloves are all essential kit.
Department of Transportation and Federal Railroad Administration hazardous material inspectors also examined 105 crude oil tank cars and found two non-critical defects, including loose head shield bolts.
The injured officer was hit by a missile that went through his protective head shield shattering his teeth and damaging the bridge of his nose.