[1] : The Collaborative International Dictionary of English v.0.48

obscurant \obscur"ant\, n. l. obscurans, p. pr. of obscurare
   to obscure.
   one who obscures; one who prevents enlightenment or hinders
   the progress of knowledge and wisdom. --coleridge.
   1913 webster

[2] : WordNet (r) 2.0

obscurant
     adj : making undecipherable or imperceptible; "obliterating
           mists"; "an obscurant bank of clouds" syn: obliterating
see also:
obliterating 

Obscurant >> O Words
Obscurant, definition of term: Obscurant
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