hood

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hood

(hud),
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.

hood

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 ?
It is well and wisely spoken, brave Robin Hood,'' said Wilfred, apart; ``and know, moreover, that they who jest with Majesty even in its gayest mood are but toying with the lion's whelp, which, on slight provocation, uses both fangs and claws.
said Robin Hood, pausing for all instant; ``but by Saint Christopher, it shall be so.
And here they built a ruddy fire and sat down to the meat and ale, Robin Hood in the center with Will Stutely on the one hand and Little John on the other.
The monster was already raising the case generating the Heat-Ray as the first shell burst six yards above the hood.
Simultaneously two other shells burst in the air near the body as the hood twisted round in time to receive, but not in time to dodge, the fourth shell.
It was plain that this mode of proceeding piqued the lady in the black hood, for she bit her lips till they bled, scratched the end of her nose, and could not sit still in her seat.
The lady with the black hood followed through all their wanderings the looks of Porthos, and perceived that they rested upon the lady with the velvet cushion, the little Negro, and the maid-servant.
Above his motionless figure the little cord and tassel on the stiff point of the hood swung about inanely in the gale.
It was no game, and would have broken all my teeth; but the White Hood said that a man--he spoke as one that knew the breed--that a man would give the breath under his ribs for only the sight of those things.
Dr Hood paced the length of his string of apartments, bounded-- as the boys' geographies say--on the east by the North Sea and on the west by the serried ranks of his sociological and criminologist library.
And now I will tell how it came about that Robin Hood fell afoul of the law.
The great idea of the Robin Hood ballads is the victory of the poor and oppressed over the rich and powerful, the triumph of the lawless over the law-givers.