• Frontispiece. Stages in the Transformations of a Gnat
    Frontispiece. Stages in the Transformations of a Gnat
  • WordNet 3.6
    • n gnat (British usage) mosquito
    • n gnat any of various small biting flies: midges; biting midges; black flies; sand flies
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: A dragonfly flaps its wings 20 to 40 times a second, bees and houseflies 200 times, some mosquitoes 600 times, and a tiny gnat 1,000 times.
    • Gnat (Zoöl) A blood-sucking dipterous fly, of the genus Culex, undergoing a metamorphosis in water. The females have a proboscis armed with needlelike organs for penetrating the skin of animals. These are wanting in the males. In America they are generally called mosquitoes. See Mosquito.
    • Gnat Any fly resembling a Culex in form or habits; esp., in America, a small biting fly of the genus Simulium and allies, as the buffalo gnat, the black fly, etc.
    • ***
Century Dictionary and Cyclopedia
    • n gnat A small two-winged fly, Culex pipiens, of the family Culicidæ, suborder Nemocera, and order Diptera, called in America mosquito. The male has plumose antennæ and does not bite, though having a kind of rostrum or beak. The female bites with a stinging proboscis, and her antennæ are filiform and but slightly pilose. The larvæ and pupæ are aquatic. According to Westwood the term gnat should be restricted to insects of the family Culicidæ, and midge should be applied to the Chironomidæ.
    • n gnat Any other insect of the family Culicidæ.—
    • n gnat A nemocerous dipterous insect; a midge. There are several families. The Mycetophilidæ are known as fungus-gnats or agaric-gnats. The Cecidomyiidæ include the gall-gnats. The buffalo-gnat is a species of Simidium, family Simuliidæ (see cut under Simulium); other simuliids are known as black-gnats and turkey-gnats. Species of Bibionidæ and Chironomidæ are also called gnats. See the compounds and technical words.
    • n gnat A bird: same as knot.
    • ***
Chambers's Twentieth Century Dictionary
    • n Gnat nat a genus of dipterous insects of numerous species, esp. abundant in marshy districts—the female lives on the blood of animals
    • ***


Webster's Revised Unabridged Dictionary
AS. gnæt,
Chambers's Twentieth Century Dictionary
A.S. gnæt; Ice. gnata, to clash.


In literature:

It is not really cool even at night, when, moreover, you are plagued with whole swarms of gnats.
"From Pole to Pole" by Sven Anders Hedin
They will more than pay for shelter by the good work they do in ridding the barn of flies, gnats, and mosquitoes.
"Agriculture for Beginners" by Charles William Burkett
For days it had reminded her of an inescapable, buzzing gnat, a thousand times magnified.
"In Apple-Blossom Time" by Clara Louise Burnham
A cloud of gnats may put as much poison into a man with their many stings as will a snake with its one bite.
"Expositions of Holy Scripture" by Alexander Maclaren
Well, that is what I should call straining at a gnat and swallowing a camel.
"Christie Redfern's Troubles" by Margaret Robertson
Waggle the glass well, Gnat.
"Blue Jackets" by George Manville Fenn
If there was a cloud of vicious gnats, Dinny generally got bitten.
"Off to the Wilds" by George Manville Fenn
I feel as if gnats were stinging me.
"The Weathercock" by George Manville Fenn
Then he rekindled the fire, at the same time fighting the gnats that swarmed upon his naked body.
"Stories Of Ohio 1897" by William Dean Howells
In form the mosquito very much resembles the gnat, but is somewhat larger.
"Away in the Wilderness" by R.M. Ballantyne

In poetry:

The Bat began with giddy wing
His circuit round the Shed, the Tree;
And clouds of dancing Gnats to sing
A summer-night's serenity.
"Dolly" by Robert Bloomfield
While towards the bed the rigid shadows lean
Stung to the patience of all emptiness
And the bed empty where she kept,
Jerky gnats lunge at the haggard screen.
"Obituary" by Allen Tate
Her silken ware is gaily spread,
And now she weaves herself a bed,
Where, hiding all but just her head,
She watching lies
For moths or gnats, entangled spread,
Or buzzing flies.
"The Spider And The Fly" by Patrick Branwell Bronte
Gone bare the fields now, and the starlings gather,
Whirr above stubble and soft changing hedges.
Changed the season chord too, F major or minor,
The gnats sing thin in clouds above the sedges.
"The Change" by Ivor Gurney
Here Gnats surround you with their humming Drone,
Worse than e'er plagu'd th'Egyptian Tyrant's Throne;
In vain the weary Limbs expect Repose,
Their Din invades your Ears, their Stings your Nose.
"A Letter From A Gentleman in Lincolnshire TO HIS Friend" by William Diaper
As thus the peasant slept one day,
The weather being torrid,
A gnat beheld him where he lay
And lit upon his forehead,
And thence, like all such winged creatures,
Proceeded over all his features.
"The Confidant Peasant And The Maladroit Bear" by Guy Wetmore Carryl

In news:

Hardball courts Savannah for new Sand Gnats stadium.
Levi Johnston is a lying, cheating gnat.
Tapia's mastery leads Gnats over Rome, 5-1.
GreenJackets beat Sand Gnats in extra innings.
They immediately and unabashedly introduce him as gay (the follow-up clip of him swatting his hands around and saying "Damn Gnats".
The grand jury says San Diego County should do something about pesky eye gnats.
Residents of rural Jacumba and Fallbrook, Rainbow, Oceanside and Escondido have been swatting at eye gnats for years.
They have the life expectancy of a cancerous gnat and lack glove traction.
The Savannah Sand Gnats have made several rosters moves at the All-Star break.
Sand Gnats & Tourism Leadership Council.
Savannah Sand Gnats Home Game Opener.
Sand Gnats vs Greensboro Game 4.
My horse has always had sensitive skin, but this year the gnats seem to have really taken a toll on him.
Your horse seems particularly sensitive and the gnats you mention are Culicoides species.

In science:

Brin introduced the geometric near-neighbor access tree(GNAT) indexing structure,which chooses k split points at the top level and each of the remaining feature vectors are associated with the closest split points.
Feature-Based Adaptive Tolerance Tree (FATT): An Efficient Indexing Technique for Content-Based Image Retrieval Using Wavelet Transform
GNAT is then built recursively and the parameter k is chosen to be a different value for each feature set depending on its cardinality.
Feature-Based Adaptive Tolerance Tree (FATT): An Efficient Indexing Technique for Content-Based Image Retrieval Using Wavelet Transform
We use the CI models of Gnat & Sternberg (2007, hereafter GS07), which predict the ionization fractions as a function of temperature for all commonly observed elements, in both the equilibrium (CIE) and nonequilibrium (NECI) cases.
Exploring the Origin and Fate of the Magellanic Stream with Ultraviolet and Optical Absorption
Fig. 6.— Ionization fractions versus temperature in the Gnat & Sternberg (2007) collisional ionization equilibrium (CIE) and nonequilibrium collisional ionization (NECI) models, for Si III, C III, and the four high ions Si IV, C IV, N V, and O VI.
Exploring the Origin and Fate of the Magellanic Stream with Ultraviolet and Optical Absorption
The colored lines show the predicted ratios versus temperature in the CIE and NECI models of Gnat & Sternberg (2007) assuming solar relative abundances.
Exploring the Origin and Fate of the Magellanic Stream with Ultraviolet and Optical Absorption