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.
References in classic literature ?
"Bestir yourselves, good fellows!" cried Robin Hood; "and while our new cook, whom I see with us, is preparing a feast worthy of our high guest, let us have a few games to do him honor!"
Then while the whole glade was filled with the savory smell of roasting venison and fat capons, and brown pasties warmed beside the blaze, and mulled wine sent forth a cordial fragrance, Robin Hood placed the Sheriff upon a knoll beneath the largest oak and sat himself down by him.
Then the Sheriff arose and said: "I thank you, Robin Hood, one-time butcher, and you, Little John, one-time beggar, and you, Much, one-time cook, and all you good men who have entertained me in Sherwood so well.
Then Robin Hood and all his men arose and drank the Sheriff's health, and Robin said: "If you must needs go at once we will not detain you--except that you have forgotten two things."
"I should not advise you, Miss MacNab," said Dr Hood gravely, "to be in any hurry to fetch the police.
Dr Hood replaced the silk hat carefully on the side table, and went across to the captive.
"I have looked at all the knots on Mr Todhunter," reiterated Hood quietly.
But Robin Hood lay hidden in Sherwood Forest for one year, and in that time there gathered around him many others like himself, cast out from other folk for this cause and for that.
So, in all that year, fivescore or more good stout yeomen gathered about Robin Hood, and chose him to be their leader and chief.
Up rose Robin Hood one merry morn when all the birds were singing blithely among the leaves, and up rose all his merry men, each fellow washing his head and hands in the cold brown brook that leaped laughing from stone to stone.
Robin Hood assured them that he had detached a party in the direction of the road they were to pass, who would not fail to discover and apprize them of any secret ambuscade; and that he had little doubt they would find the ways secure, or, if otherwise, would receive such timely notice of the danger as would enable them to fall back on a strong troop of archers, with which he himself proposed to follow on the same route.
He once more extended his hand to Robin Hood, assured him of his full pardon and future favour, as well as his firm resolution to restrain the tyrannical exercise of the forest rights and other oppressive laws, by which so many English yeomen were driven into a state of rebellion.