• WordNet 3.6
    • v retard cause to move more slowly or operate at a slower rate "This drug will retard your heart rate"
    • v retard lose velocity; move more slowly "The car decelerated"
    • v retard slow the growth or development of "The brain damage will retard the child's language development"
    • v retard be delayed
    • n retard a person of subnormal intelligence
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Einstein couldn't speak fluently when he was nine. His parents thought he might be retarded.
    • Retard A mentally retarded person.
    • Retard a person who is stupid or inept, especially in social situations.
    • Retard Retardation; delay.
    • Retard To keep delaying; to continue to hinder; to prevent from progress; to render more slow in progress; to impede; to hinder; as, to retard the march of an army; to retard the motion of a ship; -- opposed to accelerate.
    • Retard To put off; to postpone; as, to retard the attacks of old age; to retard a rupture between nations.
    • v. i Retard To stay back.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: From 1836 to 1896, the Red Flag Act in England required that any self-propelled vehicle be preceded by a man carrying a red flag by day and a red lantern by night. In effect, this limited the speed to four miles per hour and retarded the development of all self-propelled vehicles, including the automobile.
    • retard To make slow or slower; obstruct in motion or progress; delay; impede; clog; hinder.
    • retard To defer; postpone; put off.
    • retard Synonyms To detain, delay.
    • retard To be delayed or later than usual.
    • n retard Retardation.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Retard rē-tärd′ to keep back: to delay: to defer
    • ***


  • Johann Wolfgang Von Goethe
    “Science has been seriously retarded by the study of what is not worth knowing and of what is not knowable.”
  • George Houston
    George Houston
    “Anything that interferes with individual progress ultimately will retard group progress.”


Webster's Revised Unabridged Dictionary
L. retardare, retardatum,; pref. re-, re- + tardare, to make slow, to delay, fr. tardus, slow: cf. F. retarder,. See Tardy
Chambers's Twentieth Century Dictionary
Fr.,—L. retardārere-, inten., tardāre, to make slow—tardus, slow.


In literature:

The Parliament of Paris put in the way of its registration retardations which seemed to forebode a refusal.
"A Popular History of France From The Earliest Times Volume V. of VI." by Francois Pierre Guillaume Guizot
Our prudence will retard for a long time yet, I hope, the satisfaction which our enemies expect from our dissensions.
"A Popular History of France From The Earliest Times Volume VI. of VI." by Francois Pierre Guillaume Guizot
Between sunrise and midday our progress was much retarded by light south-easterly winds.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]" by Phillip Parker King
The production of the cotton was, consequently, greatly retarded.
"Camp-Fire and Cotton-Field" by Thomas W. Knox
Is it finally to be an agency for the upbuilding of the nation, or simply one of the forces that retard?
"A Social History of The American Negro" by Benjamin Brawley
But no words could retard revolution in Ireland herself.
"The Glories of Ireland" by Edited by Joseph Dunn and P.J. Lennox
To keep such fruits we must endeavor to retard or prolong the process of change, by avoiding all conditions likely to hasten decay.
"Science in the Kitchen." by Mrs. E. E. Kellogg
The undue influence of sentiment retards all domestic progress.
"The Cost of Shelter" by Ellen H. Richards
The density of this growth retarded the advance of the ships.
"De Orbe Novo, Volume 1 (of 2)" by Trans. by Francis Augustus MacNutt
Still retarded by the soft soil.
"Three Expeditions into the Interior of Eastern Australia, Vol 2 (of 2)" by Thomas Mitchell

In poetry:

Yet, oh! my sweet, it seems so long
Since you were near; and fates retard
The sequel of a struggle strong,
And life is hard—
"At Dusk" by Henry Kendall
Though cloudy skies, and northern blasts,
Retard the gentle spring awhile;
The sun will conqu'ror prove at last,
And nature wear a vernal smile.
"Waiting For Spring" by John Newton
Chance, say, or fate that works through good and evil;
Or destiny, that nothing may retard,
That to some end, above life's empty level,
Perhaps withholds reward.
"One Day And Another: A Lyrical Eclogue – Part III" by Madison Julius Cawein
The good Lady Sandys burst into a laughter
To see how the ballocks came wobbling after,
And had not their weight retarded the foe,
Indeed't had gone hard with Signior Dildo.
"Signior Dildo" by Lord John Wilmot
Ah me! what envious magic thins my fold?
What mutter'd spell retards their late increase?
Such lessening fleeces must the swain behold,
That e'er with Doric pipe essays to please.
"Elegy VIII. He Describes His Early Love of Poetry, and Its Consequences" by William Shenstone
Though swelling waves oft beat him back,
And tempests make him half a wreck,
And passions strong, with dangerous tack,
Retard his course,
Yet Christ the pilot all will check,
And quell their force.
"Epistle To The Rev. J--- B---, Whilst Journeying For The Recovery Of His Health" by Patrick Branwell Bronte

In news:

A firefighting air tanker making one last run to drop retardant on a blaze in the Sierra Nevada Monday evening crashed after takeoff just north of Reno.
If he's "the smartest guy in the room" it must be one retarded room,' she wrote the next day.
On Oct 23, she hit the " retard " button again, tweeting, "Obama.
' Retard ' her description of Obama in debate.
The Flint City Council is doing more to retard the city's progress than helping it.
El-P Hangs With A Puppet In "The Full Retard " Video. El-P recently dropped a video for his bass-heavy song "The Full Retard ," a standout track from his latest album, Cancer For Cure.
I don't often hear the word retarded anymore, but when I do I cringe.
Like Clark, I have spoken out about the use of the words " retard " and " retarded " and advocated for the Spread The Word To End The Word campaign, started by The Special Olympics.
Our coalition seeks no law to ban words and no official censorship against those who freely use " retard ".
As far as defense of " retarded " goes, I've heard from many doctors in the past two days who favor the term for clinical diagnosis purposes.
Researchers aim to retard mold growth on shredded cheese.
EPA Grant Supports Effort to Reduce Toxic Flame- Retardant Chemicals.
The Lafayette association for retarded citizens annual bead sale is going on right now at Mardi Gras beads and more.

In science:

We have shown that, starting with arbitrary, smooth initial data at u = u0 , these cosmological Robinson-Trautman solutions converge exponentially fast to a Schwarzschild-de Sitter solution at large retarded times (u → ∞).
Radiative spacetimes
In fact, for the large values of η that are suggested by the properties of the vacuum, the effects of ˜h have practically no retardation effects.
A connection between gravity and the Higgs field
For strongly nonlinear sweep with retardation in the resonance region, there is a pair of singularities symmetric with respect to the imaginary axis, that dominate P for ε ≫ 1.
Effects of nonlinear sweep in the Landau-Zener-Stueckelberg effect
However, a new feature occurs if the energy sweep W (t) exhibits a significant retardation in the vicinity of the resonance.
Effects of nonlinear sweep in the Landau-Zener-Stueckelberg effect
But electromagnetism provides us a pair of advanced and retarded solutions (the pair of t-symmetric twins corresponding to this case) which are only conventionally different.
The cosmological origin of time-asymmetry