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1. The anterior part of the integument of soft ticks (family Argasidae) that extends over the capitulum and forms the roof of the camerostome.
2. An expanded, covering structure that resembles the hood of robe or cloak in shape or function, such as the extensor digital expansions that overly the dorsal aspect of the heads of the metacarpals.
[O.E. hōd, hat]

hor·i·zon·tal lam·i·nar flow hood

(hōr'i-zon'tăl lam'i-năr' flō hud)
A laminar flow hood in which the air is pushed through a filter horizontally toward the user to maintain a sterile environment.

lam·i·nar flow hood

(lam'i-năr flō hud)
An enclosure in which air flow is directed so as to prevent contamination of sterile materials by airborne organisms.
Synonym(s): hood.

ver·ti·cal lam·in·ar flow hood

(vĕr'ti-kăl lam'i-năr flō hud)
A laminar flow hood in which the air is pushed through a filter vertically to protect the user from exposure to harmful materials.


an item of horse clothing. A cloth cover for the head; with eye and ear holes.

long hood
covers the head and neck to the shoulders.
References in classic literature ?
And thus it was that Robin Hood became outlawed; thus a band of merry companions gathered about him, and thus he gained his right-hand man, Little John; and so the prologue ends.
The GM performance of all hoods was less than 85 percent of the recommended flow rates.
Some hoods have a dual burner system so that the hot air from the dry end of the hood is cascaded to the wet end of the hood.
He decreases the depth of the cabinets on both sides of the hood to keep them away from heat and moisture.
Although these fines are much larger than the respirable particles that create a health hazard for workers, they are not so large that they can resist updraft into suction hoods.
Hood and other students who had been selected were asked to bring in short, simple stories, and the teacher, Grace Oliva, vetted their selections.
Cosy and comfortable but still seriously cool, the hood gives a great final detail to any outfit.
Canopy type hoods are the most common for mixing mills.
Safety is still the core mission of any fume hood company, but fume hoods are not strictly regulated in their basic function, which is to contain toxic gases within an enclosed space and prevent contamination of the air respired by a user.
The primary goals of this project were to: (1) quantify the capture and containment performance of both single- and double-island canopy hoods using ASTM F1704-05, Standard Test Method for Capture and Containment Performance of Commercial Kitchen Exhaust Ventilation Systems (ASTM 2005); (2) investigate the benefit of hood design features such hood depth, appliance overhang, side panels, and hood partitions; and (3) investigate the impact of different makeup air scenarios.
So, between Robin Hood the fox, Robin Hood the American, Robin Hood the spoof and Robin Hood the French womanizer, I am curious to see how the latest Robin Hood will find his unique niche in the world of Hollywood Robin Hoods.