Definition of "study"

study¹

/ˈstʌdi/

verb
third-person singular simple present studies, present participle studying, simple past and past participle studied
1. (usually academic) To review materials already learned in order to make sure one does not forget them, usually in preparation for an examination.
2. (academic) To take a course or courses on a subject.
3. To acquire knowledge on a subject with the intention of applying it in practice.
4. To look at minutely.
5. To fix the mind closely upon a subject; to dwell upon anything in thought; to muse; to ponder.
  Quotations
  I found a moral first, and studied for a fable.
  July 10, 1732, Jonathan Swift, letter to Mr. Gay and The Duchess of Queensberry
6. To endeavor diligently; to be zealous.
  Quotations
  And that ye study to be quiet, and to do your own business, and to work with your own hands, as we commanded you […]
  1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], 1 Thessalonians 4:11

study²

/ˈstʌdi/

noun
countable and uncountable, plural studies
1. Mental effort to acquire knowledge or learning.
  Quotations
  During the whole time of his abode in the university he generally spent thirteen hours of the day in study; by which assiduity besides an exact dispatch of the whole course of philosophy, he read over in a manner all classic authors that are extant […]
  1661, John Fell, The Life of the most learned, reverend and pious Dr. H. Hammond‎
  Study gives strength to the mind; conversation, grace: the first apt to give stiffness, the other suppleness: one gives substance and form to the statue, the other polishes it.
  1699, William Temple, Heads designed for an essay on conversations‎
  He draws eclectically on studies of baboons, descriptive anthropological accounts of hunter-gatherer societies and, in a few cases, the fossil record.
  2012 March-April, John T. Jost, “Social Justice: Is It in Our Nature (and Our Future)?”, in American Scientist, volume 100, number 2, page 162
2. The act of studying or examining; examination.
  Quotations
  Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: […] . The evolutionary precursor of photosynthesis is still under debate, and a new study sheds light. The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom.
  2013 September-October, Katie L. Burke, “In the News”, in American Scientist
3. Any particular branch of learning that is studied; any object of attentive consideration.
  Quotations
  The Holy Scriptures, especially the New Testament, are her daily study.
  1762, Edmund Law, An extract from A serious call to a devout and holy life
  The proper study of mankind is man.
  1733, [Alexander Pope], An Essay on Man. […], (please specify |epistle=I to IV), London: Printed for J[ohn] Wilford, […]
4. A room in a house intended for reading and writing; traditionally the private room of the male head of household.
  Quotations
  his cheery little study
  1850, Nathaniel Hawthorne, “Introductory”, in The Scarlet Letter, a Romance, Boston, Mass.: Ticknor, Reed, and Fields
5. An artwork made in order to practise or demonstrate a subject or technique.
6. The human face, bearing an expression which the observer finds amusingly typical of a particular emotion or state of mind.
7. (music) A piece for special practice; an étude.
8. (academic) An academic publication.
9. One who commits a theatrical part to memory.
10. (chess) An endgame problem composed for artistic merit, where one side is to play for a win or for a draw.
11. (obsolete) A state of mental perplexity or worried thought.
  Quotations
  wel said the kynge thow mayst take myn hors by force but and I myȝte preue the whether thow were better on horsbak or I / wel said the knyght seke me here whan thow wolt and here nygh this wel thow shalt fynde me / and soo passyd on his weye / thenne the kyng sat in a study and bad his men fetche his hors as faste as euer they myghte(please add an English translation of this quotation)
  1485, Sir Thomas Malory, chapter XX, in Le Morte Darthur, book I
12. (archaic) Thought, as directed to a specific purpose; one's concern.
  Quotations
  Just men they seemd, and all thir study bent / To worship God aright, and know his works.
  1667, John Milton, “Book X”, in Paradise Lost. […], London: […] [Samuel Simmons], […]; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873,

Definition of "study"

study1

verb

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study2

noun

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study¹

study²