ascertain

as·cer·tain  (sr-tn)

tr.v. as·cer·tained, as·cer·tain·ing, as·cer·tains

1. To discover with certainty, as through examination or experimentation. See Synonyms at discover.

2. Archaic To make certain, definite, and precise.

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[Middle English acertainen, to inform, from Old French acertener, ascertain- : a-, to (from Latin ad-; see ad-) + certain, certain; see certain.]

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ascer·taina·ble adj.

ascer·taina·ble·ness n.

ascer·taina·bly adv.

ascer·tainment n.

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ascertain

Verb

to find out definitely [Old French acertener to make certain]

ascertainment n

Thesaurus

Verb	1.	ascertain - establish after a calculation, investigation, experiment, survey, or study; "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize" determine, find out, find gauge - determine the capacity, volume, or contents of by measurement and calculation; "gauge the wine barrels" translate - determine the amino-acid sequence of a protein during its synthesis by using information on the messenger RNA rectify - math: determine the length of; "rectify a curve" redetermine - fix, find, or establish again; "the physicists redetermined Planck's constant" sequence - determine the order of constituents in; "They sequenced the human genome" ascertain, find out, learn, watch, determine, see, check - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time" refract - determine the refracting power of (a lens) count, numerate, enumerate, number - determine the number or amount of; "Can you count the books on your shelf?"; "Count your change" discover, find - make a discovery, make a new finding; "Roentgen discovered X-rays"; "Physicists believe they found a new elementary particle" admeasure - determine the quantity of someone's share situate, locate - determine or indicate the place, site, or limits of, as if by an instrument or by a survey; "Our sense of sight enables us to locate objects in space"; "Locate the boundaries of the property"
	2.	ascertain - be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product" insure, see to it, ensure, check, assure, control, see proofread, proof - read for errors; "I should proofread my manuscripts" check off, tick off, mark off, tick, check, mark - put a check mark on or near or next to; "Please check each name on the list"; "tick off the items"; "mark off the units" control - verify by using a duplicate register for comparison; "control an account" check - verify by consulting a source or authority; "check the spelling of this word"; "check your facts" double-check - check once more to be absolutely sure cross-check - check out conflicting sources; crosscheck facts, for example cinch - make sure of card - ask someone for identification to determine whether he or she is old enough to consume liquor; "I was carded when I tried to buy a beer!" spot-check - pick out random samples for examination in order to ensure high quality verify - confirm the truth of; "Please verify that the doors are closed"; "verify a claim" ascertain, find out, learn, watch, determine, see, check - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time" cover - maintain a check on; especially by patrolling; "The second officer covered the top floor" verify, control - check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard; "Are you controlling for the temperature?"
	3.	ascertain - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time" find out, learn, watch, determine, see, check insure, see to it, ensure, ascertain, check, assure, control, see - be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product" ascertain, determine, find out, find - establish after a calculation, investigation, experiment, survey, or study; "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize" test - determine the presence or properties of (a substance)
	4.	ascertain - learn or discover with certainty get a line, get wind, get word, hear, learn, discover, find out, pick up, see - get to know or become aware of, usually accidentally; "I learned that she has two grown-up children"; "I see that you have been promoted" price - ascertain or learn the price of; "Have you priced personal computers lately?"

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ascertain

verb find out, learn, discover, determine, confirm, settle, identify, establish, fix, verify, make certain, suss (out) (slang) ferret out

Translations

ascertain [æsəˈteɪn] vt → averiguar

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ascertain [æsəˈteɪn] vt → s'assurer de, vérifier; établir

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ascertain [æsəˈteɪn] vt → feststellen

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ascertain [æsəˈteɪn] vt → accertare