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ASCERTAIN

Pronunciation (US): 

 Dictionary entry overview: What does ascertain mean? 

ASCERTAIN (verb)
  The verb ASCERTAIN has 4 senses:

1. establish after a calculation, investigation, experiment, survey, or study
2. be careful or certain to do something; make certain of something
3. find out, learn, or determine with certainty, usually by making an inquiry or other effort
4. learn or discover with certainty

  Familiarity information: ASCERTAIN used as a verb is uncommon.


 Dictionary entry details 


ASCERTAIN (verb)


Sense 1ascertain [BACK TO TOP]

Meaning:

Establish after a calculation, investigation, experiment, survey, or study

Classified under:

Verbs of telling, asking, ordering, singing

Synonyms:

find out; determine; ascertain; find

Context examples:

find the product of two numbers / The physicist who found the elusive particle won the Nobel Prize

Troponyms (each of the following is one way to "ascertain"):

locate; situate (determine or indicate the place, site, or limits of, as if by an instrument or by a survey)

admeasure (determine the quantity of someone's share)

count; enumerate; number; numerate (determine the number or amount of)

refract (determine the refracting power of (a lens))

sequence (determine the order of constituents in)

redetermine (fix, find, or establish again)

rectify (math: determine the length of)

translate (determine the amino-acid sequence of a protein during its synthesis by using information on the messenger RNA)

gauge (determine the capacity, volume, or contents of by measurement and calculation)

Sentence frames:

Somebody ----s something
Somebody ----s whether INFINITIVE


Sense 2ascertain [BACK TO TOP]

Meaning:

Be careful or certain to do something; make certain of something

Classified under:

Verbs of thinking, judging, analyzing, doubting

Synonyms:

insure; see to it; ascertain; ensure; check; assure; control; see

Context examples:

He verified that the valves were closed / See that the curtains are closed / control the quality of the product

Hypernyms (to "ascertain" is one way to...):

verify (confirm the truth of)

Troponyms (each of the following is one way to "ascertain"):

proof; proofread (read for errors)

cover (maintain a check on; especially by patrolling)

spot-check (pick out random samples for examination in order to ensure high quality)

card (ask someone for identification to determine whether he or she is old enough to consume liquor)

cinch (make sure of)

cross-check (check out conflicting sources; crosscheck facts, for example)

double-check (check once more to be absolutely sure)

control (verify by using a duplicate register for comparison)

Sentence frame:

Somebody ----s that CLAUSE


Sense 3ascertain [BACK TO TOP]

Meaning:

Find out, learn, or determine with certainty, usually by making an inquiry or other effort

Classified under:

Verbs of telling, asking, ordering, singing

Synonyms:

ascertain; find out; learn; watch; determine; see; check

Context examples:

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

Troponyms (each of the following is one way to "ascertain"):

test (determine the presence or properties of (a substance))

Sentence frame:

Somebody ----s whether INFINITIVE

Sentence example:

They ascertain whether there was a traffic accident


Sense 4ascertain [BACK TO TOP]

Meaning:

Learn or discover with certainty

Classified under:

Verbs of thinking, judging, analyzing, doubting

Hypernyms (to "ascertain" is one way to...):

discover; find out; get a line; get wind; get word; hear; learn; pick up; see (get to know or become aware of, usually accidentally)

Troponyms (each of the following is one way to "ascertain"):

price (ascertain or learn the price of)

Sentence frame:

Somebody ----s that CLAUSE

Sentence example:

They ascertain that there was a traffic accident


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