• WordNet 3.6
    • v investigate conduct an inquiry or investigation of "The district attorney's office investigated reports of possible irregularities","inquire into the disappearance of the rich old lady"
    • v investigate investigate scientifically "Let's investigate the syntax of Chinese"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: In 1945 a computer at Harvard malfunctioned and Grace Hopper, who was working on the computer, investigated, found a moth in one of the circuits and removed it. Ever since, when something goes wrong with a computer, it is said to have a bug in it.
    • v. t Investigate To follow up step by step by patient inquiry or observation; to trace or track mentally; to search into; to inquire and examine into with care and accuracy; to find out by careful inquisition; as, to investigate the causes of natural phenomena.
    • v. i Investigate To pursue a course of investigation and study; to make investigation.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: It's safe to make love while parked in Coeur d'Alene, Idaho. Police officers aren't allowed to walk up and knock on the window. Any suspicious officer who thinks that sex is taking place must drive up from behind, honk his horn three times and wait approximately two minutes before getting out of his car to investigate.
    • investigate To search into or search out; inquire into; search or examine into the particulars of; examine in detail: as, to investigate the forces of nature; to investigate the causes of natural phenomena; to investigate the conduct of an agent.
    • investigate Synonyms To scrutinize, overhaul, sift, probe into, explore, study.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Investigate in-vest′i-gāt to search into: to inquire into with care and accuracy
    • ***


  • Sir William Osler
    “Study until twenty five, investigate until forty, profession until sixty, at which age I would have him retired on a double allowance.”
  • Bliss Carman
    Bliss Carman
    “What are facts but compromises? A fact merely marks the point where we have agreed to let investigation cease.”
  • Seneca
    “If you judge, investigate.”
  • Plutarch
    “Medicine to produce health must examine disease; and music, to create harmony must investigate discord.”
  • Marcus Aurelius
    “Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.”
  • Seneca
    “If you sit in judgment, investigate, if you sit in supreme power, sit in command.”


Webster's Revised Unabridged Dictionary
L. investigatus, p. p. of investigare, to investigate; pref. in-, in + vestigare, to track, trace. See Vestige
Chambers's Twentieth Century Dictionary
L. investigāre, -ātumin, in, vestigāre, to track.


In literature:

This geologist is Sorby, who has attacked the question in the true spirit of a physical investigator.
"Fragments of science, V. 1-2" by John Tyndall
There the scientist, the philosopher and inventor found the means and appliances for study and investigation.
"Mizora: A Prophecy" by Mary E. Bradley
Briefly he explained the occurrences on deck, and, as all was quiet now, asked her to step up and investigate.
"The Wreck of the Titan" by Morgan Robertson
Every work on the origin of religion assumes it, and all investigation warrants the assumption.
"Theism or Atheism" by Chapman Cohen
He had met with unanticipated difficulties in his investigation.
"The Goose Man" by Jacob Wassermann
So Leslie continued on her own way, absorbed in her own investigations and thoughts.
"The Dragon's Secret" by Augusta Huiell Seaman
A vice investigating committee is raising ructions.
"Little Lost Sister" by Virginia Brooks
Without a moment's hesitation, I would say after much investigation, one curse of our land today is five-cent theaters.
"Fighting the Traffic in Young Girls" by Various
By long practice, the medium was enabled to determine what the investigator wrote, by the motion of his hand in writing.
"The Humbugs of the World" by P. T. Barnum
I was there to investigate.
"The Stretton Street Affair" by William Le Queux

In poetry:

American Detectives
Never remove their hats
When investigating murders
In other people's flats.
"Why?" by Spike Milligan
I see by the morning papers
That America's sturdy sons
Have started a investigation
Of the making of guns.
"Another Bit And An Offer" by Ezra Pound
Going out to investigate
He found the lamb beyond him, on the inaccessible pinnacle
of light.
So he put his paw to his nose, and pondered.
"St. Mark" by D H Lawrence
I walked around as you do, investigating
the endless star,
and in my net, during the night, I woke up naked,
the only thing caught, a fish trapped inside the wind.
"Enigmas" by Pablo Neruda
AP. To earth away to join in mortal acts.
And gather fresh materials to write on.
Investigate more closely, several facts,
That I for centuries have thrown some light on.
"Thespis: Act I" by William Schwenck Gilbert
Triumphal return to Simla of the Investigators, attired after
the manner of Dionysus, leading a pet tiger-cub in wreaths
of rhubarb-leaves, symbolical of India under medical treatment.
They sing: —
"The Masque of Plenty" by Rudyard Kipling

In news:

Investigators from the Hall County Sheriff's Office are investigating the death.
This story was written by CBS News chief investigative correspondent Armen Keteyian and Investigative Producer Laura Strickler.
Wyandotte County Democratic Chairman Matt Watkins says Sen Chris Steineger is being investigated by the Kansas Bureau of Investigation.
The Reno Police Department's Major Accidents Investigation Team is investigating the accident which happened in the intersection of Plumb Lane and Harvard Way.
As the investigation into SU Basketball Associate Head Coach Bernie Fine continues, many Syracuse fans have wondered not just what would be a result of the investigation, but also how it would affect the future of the SU basketball program.
AUSTIN, Texas (AP) — The Texas prosecutor responsible for investigating public corruption among state officials said Tuesday that he has opened an investigation into the state's troubled $3 billion cancer-fighting agency .
Two transients are behind bars after being caught with apparently stolen property while Hemet police were investigating a burglary alarm at a city-owned building, investigators say.
As police and the Department of Children and Families continues to investigate a Cape Coral daycare, there are new accusations and documents that suggest the school tried to mislead parents about the investigation.
The Federal Bureau of Investigations and Savannah-Chatham police are investigating the armed robbery of an armored truck early this morning.
Anyone with information is asked to call sheriff's bomb and arson investigators at 909-890-4840 or Cal Fire arson investigators at 951-782-4140.
The incident happened during an investigation of a possible person or drug smuggling investigation off the Southern California coast.
The Kootenai County Sheriff's Traffic Investigation Team is currently investigating the incident.
Investigators with the Antioch Police Department continue their investigation of an overnight shooting that left one dead in Antioch, Calif on Tuesday, Aug 28, 2012.
Police investigating the abduction and slaying of 10-year-old Jessica Ridgeway are searching for the owner of a small wooden cross found during the investigation.
In 2004 I went on a real ghost investigation with professional paranormal investigator Chad Lewis.

In science:

In Section III we investigate correlations between low-lying states, and consider pairing properties.
Spin Structure of Many-Body Systems with Two-Body Random Interactions
The effect of diagonal spin-spin interactions in a spin system with random wave functions has been investigated in ref. .
Spin Structure of Many-Body Systems with Two-Body Random Interactions
Stochastic density matrix method is developed, which is used for investigation of thermodinamical characteristics of the system, such as entropy and average energy.
Exactly solvable models of quantum mechanics including fluctuations in the framework of representation of the wave function by random process
Nevertheless, we need to consider a reduced density matrix on a semi-group , when investigating a quantum subsystem.
Exactly solvable models of quantum mechanics including fluctuations in the framework of representation of the wave function by random process
However, I have not investigated what these relations might be.
Defining Entropy Bounds