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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.

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

as′cer·tain′a·ble adj.
as′cer·tain′a·ble·ness n.
as′cer·tain′a·bly adv.
as′cer·tain′ment n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.ascertainable - capable of being ascertained or found out; "ascertainable facts"
determinable - capable of being determined or limited or fixed; "determinable velocities"; "matters determinable by law"
مُمْكِن التَحَقُّق مِنه
det man kan finde ud af
sem hægt er aî fá vissu fyrir
doğrusunu öğrenebilme


[ˌæsəˈteɪnəbl] ADJdeterminable




(ӕsəˈtein) verb
to find out. We shall never ascertain the truth.
ˌascerˈtainable adjective
References in classic literature ?
If we confine ourselves to facts which have been actually observed, we must say that past occurrences, in addition to the present stimulus and the present ascertainable condition of the organism, enter into the causation of the response.
But the observable fact is that the stimulus of being in the cage produces differing results with repetition, and that the ascertainable cause of the cat's behaviour is not merely the cage and its own ascertainable organization, but also its past history in regard to the cage.
For some time now, things have been happening in this district that have been worrying him dreadfully--several people have disappeared, without leaving the slightest trace; a dead child was found by the roadside, with no visible or ascertainable cause of death--sheep and other animals have been found in the fields, bleeding from open wounds.
The odour from the wicker bottle (which has somehow passed into Durdles's keeping) soon intimates that the cork has been taken out; but this is not ascertainable through the sense of sight, since neither can descry the other.
The approach to that in its turn might be gained by obtaining the assistance of Anne Catherick's mother, and the only ascertainable means of prevailing on Mrs.
That his papers were in arrear, and that he stood in need of assistance to develop the capacity of his business, was clear enough; but all the results of his undertakings during many years were distinctly set forth, and were ascertainable with ease.
Call options issued to employees or independent contractors in connection with the performance of services do not constitute a second class of stock if the call options are not transferable and do not have a readily ascertainable FMV at the time the option is issued under Sec.
2513-1(b)(4) states that when a spouse transfers property to his or her spouse and to third parties, the transfer qualifies for split-gift treatment only if the interest transferred to third parties is ascertainable and severable from the interest transferred to the spouse.
It then would sell them for a large cash down payment with the balance made up of a comparatively small amount of debt instruments (five-year Libor notes) whose yield over a fixed period of time was not ascertainable.
THE RECIPIENTS OF NQSOs do not recognize taxable income on the grant date when the option does not have a readily ascertainable fair market value.
As Sidman noted, the proposal's requirements also would result in dramatically increased energy consumption and would impose an open-ended regime of training and monitoring costs that would significantly inflate the cost of building maintenance without ascertainable benefits.
A formulary method should be used only where an arm's-length price is not reasonably ascertainable.