• WordNet 3.6
    • adj buoyant characterized by liveliness and lightheartedness "buoyant spirits","his quick wit and chirpy humor","looking bright and well and chirpy","a perky little widow in her 70s"
    • adj buoyant tending to float on a liquid or rise in air or gas "buoyant balloons","buoyant balsawood boats","a floaty scarf"
    • ***
Webster's Revised Unabridged Dictionary
    • Buoyant Bearing up, as a fluid; sustaining another body by being specifically heavier. "The water under me was buoyant ."
    • Buoyant Having the quality of rising or floating in a fluid; tending to rise or float; as, iron is buoyant in mercury. "Buoyant on the flood."
    • Buoyant Light-hearted; vivacious; cheerful; as, a buoyant disposition; buoyant spirits.
    • ***
Century Dictionary and Cyclopedia
    • buoyant Having the quality of rising or floating in a fluid; floating; relatively light; that will not sink.
    • buoyant Bearing up, as a fluid; sustaining another body by reason of greater specific gravity.
    • buoyant Figuratively, cheerful; hopeful; not easily depressed.
    • buoyant Causing buoyancy of mind; cheering; invigorating.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Buoyant light: cheerful
    • ***


  • Alexander Maclaren
    “Seek to cultivate a buoyant, joyous sense of the crowded kindnesses of God in your daily life.”
  • Catharine Esther Beecher
    Catharine Esther Beecher
    “The delicate and infirm go for sympathy, not to the well and buoyant, but to those who have suffered like themselves.”


Webster's Revised Unabridged Dictionary
From Buoy (v. t. & i.)
Chambers's Twentieth Century Dictionary
Dut. boei, buoy, fetter, through Romance forms (Norman boie), from Low L. boia, a collar of leather.


In literature:

How buoyant the earth must be, when every twig becomes a feather!
"Atlantic Monthly, Volume 6, No. 38, December, 1860" by Various
An expression of utter dejection came into his face; a haggard look replaced the buoyant smile.
"The Man From Brodney's" by George Barr McCutcheon
But when the tank was replenished the car came again to life, throbbing buoyantly.
"The Wrong Twin" by Harry Leon Wilson
An average temperature of 60 degrees should be maintained, with a rather dry and buoyant atmosphere.
"Gardening for the Million" by Alfred Pink
But memory pushes all that aside, and obstinately insists on regarding the whole period in an idyllic and buoyant light.
"The Silent Isle" by Arthur Christopher Benson
The exultation of victory was upon Yolanda, and her buoyant spirits mounted to the skies.
"Yolanda: Maid of Burgundy" by Charles Major
The Flying Fish, however, rode the sweeping seas gallantly, breasting even the biggest combers bravely and buoyantly.
"The Boy Scouts of the Eagle Patrol" by Howard Payson
But the discovery of their presence chilled the buoyant spirits of the hunters.
"The Wolf Hunters" by James Oliver Curwood
The voices of the soul are buoyant, joyous, hopeful.
"The Right and Wrong Uses of the Bible" by R. Heber Newton
My spirits were actually buoyant.
"A Bicycle of Cathay" by Frank R. Stockton
The brightness of the morning was not lost on me, and before I reached the maple-grove I was buoyant and happy.
"Richard Vandermarck" by Miriam Coles Harris
Light-hearted, buoyant, unassuming, he gave his animal spirits full play, and was the life of our little dinner.
"In the Days of My Youth" by Amelia Ann Blandford Edwards
Like himself, it was lively, buoyant, thoughtless, bustling, and full of animal feeling.
"The Water-Witch or, The Skimmer of the Seas" by James Fenimore Cooper
Ah, how happy and buoyant he was then!
"Yesterdays with Authors" by James T. Fields
Even Franklin, most hopeful and buoyant of men, was nearly ready to despair.
"George Washington, Vol. II" by Henry Cabot Lodge
He has made cheerfulness a habit, and it has paid him in courage, in bubbling energy, and buoyant resolve.
"Laugh and Live" by Douglas Fairbanks
The double boat thus formed was suspended on belts of canvas which supported it buoyant and clear of the framework.
"Three Expeditions into the Interior of Eastern Australia, Vol 1 (of 2)" by Thomas Mitchell
Right merrily did he abandon himself to the buoyant spirits of an irrepressible nature.
"Eugene Field, A Study In Heredity And Contradictions" by Slason Thompson
The two swing along buoyantly, keeping step as if accustomed to walking together.
"Jean Francois Millet" by Estelle M. Hurll
The first Brooklyn Tabernacle was, I believe, the most buoyant expression of my work that I ever enjoyed.
"T. De Witt Talmage" by T. De Witt Talmage

In poetry:

Our uncle, kind and tender,
The cousins, buoyant, gay;
My playmates calling for me,
To school we his away.
"Voices Hushed" by Mary Alice Walton
I gave him all my buoyant
Hope for my future years;
I gave him whatever melody
My voice had steeped in tears.
"Francie" by Rose Hawthorne Lathrop
Thou who madest me so fair,
Strong and buoyant as the air,
Tall and noble as a tree,
With the passions of the sea,
"Samson" by Frederick George Scott
Calm in the hour of buoyant health,
Calm in my hour of pain;
Calm in my poverty or wealth,
Calm in my loss or gain;
"Calm Me, My God" by Horatius Bonar
But the vernal tints again,
Shall enliven vale and plain;
When the golden sun shall bring
Rosy vested, buoyant Spring.
"Merry New Year" by Henry Pelham Holmes Bromwell
Yet fragments of the lofty strain
Float down the tide of years,
As, buoyant on the stormy main,
A parted wreck appears.
"Thomas the Rhymer" by Sir Walter Scott

In news:

The ever-buoyant LaLanne opened what's believed to be the country's first health club in Oakland in 1936.
While there is not a lot of activity in Sri Lanka and Bangladesh, the controls and instrumentation markets in India and Pakistan look decidedly buoyant.
Lang draws from her own biography of the larger-than-life Edward William Cole (E. Chasing the Rainbow) for her engaging and buoyant debut novel, a cinematic historical.
Hear some buoyant music from Mali, Bourkina Faso, Senegal, and more on this New Sounds program.
The hooks are countless and the samples are buoyant.
UCLA's Jeff Baca, an anchor on offensive line, is buoyant anew .
Even though oil prices are reasonably buoyant, the situation for natural gas is less positive.
The 60-year-old mayor of Hornell was mesmerized by Clinton in 1996, when he accepted nomination for a second term, and was buoyant after seeing Clinton's Wednesday night address to delegates in 2012.
US food exports to Cuba flatline despite trade fair's buoyant tone, as island looks elsewhere .
Chile's Third-Quarter GDP Grew 5.7% On Buoyant Domestic Demand.
For summer's red wines, seek out those that are moderate of tannin and alcohol, buoyant of fruit flavors and edged with a bit of acidity.
Anyone who meets Mickey Guimarin would be immediately struck by her friendliness and colorful, buoyant personality.
Never since the depths of the 2008 recession have Californians been so buoyant about the economy and its future.
The buoyant scene felt straight out of Madison, the capital city where the Progressive Party was born.
Its salt water makes you buoyant and fast, so a lap here is that much easier.

In science:

The sunspot pair forms due to the buoyant rise of the toroidal field and we get the poloidal field after its decay.
Dynamo models of grand minima
The review article by Brenner (1974) collects analytical results on the motion of rigid neutrally buoyant bodies of revolution sub ject to a uniform velocity gradient and to Brownian fluctuations. A more recent review on this problem can be found in Petrie (1999).
Orientation of non-spherical particles in an axisymmetric random flow
What are seen are bubble structures and plumes indicative of buoyant convection (Figure 12).
Perspectives on Core-Collapse Supernova Theory
Eruption of a buoyantly emerging magnetic flux rope.
Solar filament eruptions and their physical role in triggering Coronal Mass Ejections
We always take a single-valued T (Ξ), since a two-phase solution may be buoyantly unstable, making the denser, colder gas sink.
X-ray Spectroscopy of Accretion Disks and Stellar Winds in X-Ray Binaries
Both sets of radio bubbles, being of lower density than the ambient gas, must be buoyant.
Chandra Observations of the Components of Clusters, Groups, and Galaxies and their Interactions
Instead of a dynamo and buoyant magnetic flux tubes as in the sun, in accretion disks the kinetic energy of the gas in the accretion disk is transferred, e.g., by shock waves, to thermal energy.
Interpreting a Dwarf Nova Eruption as Magnetic Flare Activity
Quadrupolar loops residing in a single hemisphere can rise buoyantly as a single unit and collapse, reconnecting with themselves.
General Relativistic MHD Jets
If thermal diffusion is too slow to equilibrate the temperature of the displaced fluid with its surroundings, the elements will continue to move radially, because they are now buoyantly unstable.
Resistive double-diffusive instability in the dead-zones of protostellar disks
Though buoyantly driven, the instability clearly has features in common with the MRI.
Resistive double-diffusive instability in the dead-zones of protostellar disks
In this paper, the simplest possible case of a neutrally buoyant, almost spherical vesicle in a purely Newtonian solvent, is taken into consideration.
The role of tank-treading motions in the transverse migration of a spheroidal vesicle in a shear flow
The details depend on how one implements the mixing of convective zones within an iteration scheme, on the one hand, and whether one naively uses the Schwarzschild criterion for determining the convective boundary or whether one allows the model to find a buoyantly neutral edge.
Nucleosynthesis in Intermediate-Mass Asymptotic Giant Branch Stars
These studies show that the buoyant material can give rise to a mushroom-type structure which although susceptible to Rayleigh-Taylor instability can significantly affect a cooling flow within the cluster.
On the interaction of FR-II radio sources with the intracluster medium
The buoyant phase studied by Br¨ugen & Kaiser will then be very efficient at mixing this gas into the ambient material at large cluster radii.
On the interaction of FR-II radio sources with the intracluster medium
These forces will lead to a pinching off of the cocoon near the host galaxy and the onset of a buoyant phase (Br¨ugen & Kaiser 2001).
On the interaction of FR-II radio sources with the intracluster medium