• WordNet 3.6
    • n tentacle any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals; used for feeling or grasping or locomotion
    • n tentacle something that acts like a tentacle in its ability to grasp and hold "caught in the tentacles of organized crime"
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Webster's Revised Unabridged Dictionary
    • n Tentacle (Zoöl) A more or less elongated process or organ, simple or branched, proceeding from the head or cephalic region of invertebrate animals, being either an organ of sense, prehension, or motion.
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Century Dictionary and Cyclopedia
    • n tentacle In zoology, some or any elongated and comparatively slender or flexible process or appendage of an animal, used as an organ of touch, or for exploration, prehension, and sometimes locomotion; a feeler; a tentaculum. The name covers a great variety of organs having little or no structural relationship, as horns, antennæ, proboscides, rays, and arms.
    • n tentacle In botany, a kind of sensitive hair or filament, such as the glandular hairs of Drosera.
    • n tentacle Figuratively, anything resembling a tentacle; a feeler.
    • n tentacle See the adjectives.
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Chambers's Twentieth Century Dictionary
    • n Tentacle ten′ta-kl a thread-like organ of certain insects for feeling or motion
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  • Robert Downey Jr.
    Robert Downey Jr.
    “A lot of my peer group think I'm an eccentric bisexual, like I may even have an ammonia-filled tentacle somewhere on my body. That's okay.”


Webster's Revised Unabridged Dictionary
NL. tentaculum, from L. tentare, to handle, feel: cf. F. tentacule,. See Tempt
Chambers's Twentieth Century Dictionary
Fr. tentacule—L. tentāre, to feel—tendĕre, to stretch.


In literature:

Life, against all his instinct, his wishes, had reached out and caught him, however lightly, in its tentacles.
"Wild Oranges" by Joseph Hergesheimer
Darquelnoy shook a tentacle in negation.
"They Also Serve" by Donald E. Westlake
One of the serpentine tentacles whipped out, slapped against the tyranosaur's fore-shoulder to call forth a hiss and a short bellow.
"Astounding Stories of Super-Science, December 1930" by Various
Its tentacles and limbs became fixed and rigid, and it toppled over in the brush.
"Astounding Stories, July, 1931" by Various
And the tentacles we threw out, clawing at everything, stealing for prop to our little theory all of man and God!
"The Kempton-Wace Letters" by Jack London
There was something suggestive about it which awakened his mind to grope tentacle-like for that of which it was reminiscent.
"Trusia" by Davis Brinton
They were curled in a corner of the cage now, tentacles wrapped about each other, squeaking contentedly.
"Jimsy and the Monsters" by Walt Sheldon
The settlements have to stretch tentacles out to the place where the railroad company determines to build a station.
"Frances of the Ranges" by Amy Bell Marlowe
The way he groped at my fingers with certain of his tentacles gave us a clue.
"Stamped Caution" by Raymond Zinke Gallun
Illy landed by the box like a huge silver spider and his tentacles whipped futilely across its top.
"The Big Time" by Fritz Reuter Leiber

In poetry:

Wards of Whose realm shall ye avail
To loose the tentacles of force
That drag Arcturus from his course,
And rend the weight of Procyon's mail?
"The Testimony of the Suns" by George Sterling
Beneath her, throbbing anvils shout,
And lift their voice with ringing peal,
While engines groan and toss about
Their tentacles of gleaming steel.
"A Blackbird's Nest" by Alexander Anderson
Suddenly some invisible tentacles
Would draw into a circle lines of light,
As a massive searchlight hurtled past
On to the viaduct out of the night.
"On Early Trains" by Boris Pasternak
Ghastly Vatican.
I am sick to death of hot salt.
Green as eunuchs, your wishes
Hiss at my sins.
Off, off, eely tentacle!
There is nothing between us.
"Medusa" by Sylvia Plath
Tonight I saw a little moon
Caught in the naked, brown branches of a tree.
Like an octopus, they held it,
Passing it in horrible silence
From tentacle to tentacle.
Then slowly ... they pulled it down.
"Tragedy" by Edith Mirick
And his blood has dripped into my heart!
And my heart beats and labours. One! Two!
Three! His dead limbs have coiled every part
Of my body in tentacles. Through
My ears the waltz jangles. Like glue
His dead body holds me athwart.
"After Hearing A Waltz" by Amy Lowell

In news:

Much of the lightning came in the form of anvil crawlers which branch (or crawl) across the sky near the thunderstorm's anvil top like tentacles.
Environmental movement has tentacles reaching all levers of power.
I don't like politics, but there seems to be no way of getting completely free from its tentacles.
There's a wonderful giant-squid tentacle that begins to have a starring role, and.
TOKYO — When a nearly 20-foot long tentacle was hauled aboard his research ship, Tsunemi Kubodera knew he had something big.
Patterns of political funding similar to those found in D.C. Thompson's donor tentacles reach into Maryland.
Pre-Valentine\'s Day fun with your tentacled pin up queen Tentra Subversa.
You have to count tentacles .
With so much movement in all the tentacles , biologists are still straining to get a good look.
Day of the Tentacle vs Chrono Trigger.
All Blogs Laser Orgy LO500 Battle of the Week: Day of the Tentacle vs Chrono Trigger.
Bizarre tentacled snakes born at National Zoo.
For the first time in more than a decade, a group of tentacled snakes was born at the Smithsonian's National Zoo.
And when the World Series arrives, any and all artistic integrity goes out the window when it comes to anthems , and Fox's cross-promotional tentacles take over.
Songs to stir the tentacles of Cthulhu himself.

In science:

This is related to long, thin “tentacles” seen on the picture around some basins.
Transportation to random zeroes by the gradient flow
They increase the typical diameter of basins though the probability that a given point z lies in such a tentacle is very small.
Transportation to random zeroes by the gradient flow
There exists a combinatorial procedure that allows one to cut the tentacles off and to get an almost optimal estimate for the diameters of the modified basins.
Transportation to random zeroes by the gradient flow
We define the tentacles TR (a) of the basin B (a) as follows.
Transportation to random zeroes by the gradient flow
The rest of the curve is called the θ-tentacle.
Transportation to random zeroes by the gradient flow