Hypertext Webster Gateway: "onus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Onus \O"nus\, n. [L.]
A burden; an obligation.
{Onus probandi}[L.], obligation to furnish evidence to prove
a thing; the burden of proof.
From WordNet (r) 1.7 (wn)
onus
n : an onerous or difficult concern; "the burden of
responsibility"; "that's a load off my mind" [syn: {burden},
{load}, {encumbrance}, {incumbrance}]
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