• WordNet 3.6
    • n intruder someone who intrudes on the privacy or property of another without permission
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Spiral staircases in medieval castles are running clockwise. This is because all knights used to be right-handed. When the intruding army would climb the stairs they would not be able to use their right hand which was holding the sword because of the difficulties of climbing the stairs. Left-handed knights would have had no troubles, except left-handed people could never become knights because it was assumed that they were descendants of the devil
    • Intruder A person who enters a private residence or place of business with the intention to perform a criminal act; as, killed by an intruder .
    • Intruder One who intrudes; one who thrusts himself in, or enters without right, or without leave or welcome; a trespasser. "They were all strangers and intruders ."
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: In order to scare away predators, Giant petrels, a type of seabird, throw up all over the intruder
    • n intruder One who intrudes; one who thrusts himself in, or enters where he has no right or is not welcome.
    • ***


  • Epicurus
    “Misfortune seldom intrudes upon the wise man; his greatest and highest interests are directed by reason throughout the course of life.”


In literature:

When the four of them were together, Rose felt like an outsider intruding on intimates.
"The Real Adventure" by Henry Kitchell Webster
He shall not intrude upon you here; he shall not intrude upon you anywhere without warning.
"Verner's Pride" by Mrs. Henry Wood
I beg your pardon for intruding, madam.
"The Southern Cross" by Foxhall Daingerfield, Jr.
Farmer Barton was a good patriot, and the knowledge that the intruder was a navy-man sensibly moderated his truculence.
"Round the World in Seven Days" by Herbert Strang
For what if the intruder were Lord Arondelle?
"The Lost Lady of Lone" by E.D.E.N. Southworth
The intruder had swung back his foot and dealt the dog a savage kick.
"Madge Morton, Captain of the Merry Maid" by Amy D. V. Chalmers
Into this peaceful world-scheme intruded, now, a disorganizing factor.
"The Clarion" by Samuel Hopkins Adams
Your Lordship respects 'peasants and mechanics when they intrude not themselves into concerns for which their education has not fitted them.
"The Prose Works of William Wordsworth" by William Wordsworth
Let us stun and astonish the intruding rabble of men and books and institutions, by a simple declaration of the divine fact.
"Essays" by Ralph Waldo Emerson
Then they, too, grinned broadly, for it was impossible to resist so good-humoured an intruder.
"The Half-Hearted" by John Buchan

In poetry:

"What felicity!" miaowed he,
"where none may intrude;
just man and beast- met
in this solitude!"
"Comfort" by Walter de la Mare
But earth-born love intrudes
And brings me back to earth;
To dreamy solitudes
My spirit wanders forth:
"Sin Of The Choral Singer" by James Avis Bartley
How terrible these nights are when alone
With our scarred hearts, we sit in solitude,
And some old sorrow, to the world unknown,
Does suddenly with silent steps intrude.
"Spectres" by Ella Wheeler Wilcox
Afar from the tumult and turmoil of fashion,
Away, far away, from the throng that intrudes;
I am free from all envy and malice and passion
For my spirit expands in the wild solitudes.
"The Ranchman's Song" by William Lawrence Chittenden
Pleased with the soft, the soothing power
Of calm Reflection's silent hour, Sequester'd dost thou dwell?
Where care and tumult ne'er intrude,
Dost thou reside with Solitude? Thy humble votaries tell.
"The Search After Happiness. A Pastoral Drama" by Hannah More
The few I want I can invite;
Hence why should others thus intrude?
How dare they give themselves the right,
Unasked, to spoil my solitude?
And why presume I care to know
More triflers in their world of show?
"My Bores" by John Lawson Stoddard

In news:

Texas homeowner Ervin Brittnacher, age 79, stopped an armed intruder with his bare hands KHOU-TV's Doug Miller reports.
'Intruders' review: Clive Owen battles a child's nightmares.
MILLENNIUM Clive Owen hears things that go bump in the night in "Intruders".
"Intruders" knows that, which is why it's a creepy bit of storytelling.
Monroe County Sheriff's deputies arrested a sleeping intruder over the weekend.
A homeowner shot an intruder in the 1000 block of East 149th Avenue North in northern Sumner County.
No one, except the intruder, was injured in the incident.
The Tombstone Marshal's Office says they responded to this home after receiving a call about a home intruder.
Alan Nunnelee hasn't made plans for Dec.23 or 26, but he hopes the "fiscal cliff" debate won't intrude into the holidays, the freshman Republican said as his first term ends this month.
Security has been tightened around the set of The Fighter after an intruder got too close to Oscar nominee Amy Adams.
Wells, owner of Honda Kawasaki of Orangeburg, said gunfire became necessary Sept 4 once the reptilian intruder made an unexpected entrance.
Police say an intruder was trying to break into a camper when the owner was notified, and took matters into his own hands.
John home intruder ends up zip-tied on garage floor.
Birmingham woman finds home intruder hiding in basement.
Husband thought to be intruder shot, killed by wife.

In science:

P(X ≥ t ) = e−2lrvs t . where X represents the detection time of the intruder.
Dynamic Coverage of Mobile Sensor Networks
Note that the expected intruder detection time is independent of the sensor movement direction distribution density function, f sQ (q).
Dynamic Coverage of Mobile Sensor Networks
Therefore, in order to quickly detect a stationary intruder, one can add more sensors, use sensors with larger sensing ranges, or increase the speed of the mobile sensors.
Dynamic Coverage of Mobile Sensor Networks
If the sensing range of each sensor is fixed, the above formula presents the tradeoff between sensor density and sensor mobility to ensure given expected intruder detection time requirement.
Dynamic Coverage of Mobile Sensor Networks
Similarly as in Theorem 1, we de fine a thinned Poisson process Feff (0, t ) by selecting the sensors that will detect the intruder during the interval [0, t ].
Dynamic Coverage of Mobile Sensor Networks