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

ignore \ignore"\, v. t. imp.  p. p. ignored; p. pr.  vb.
   n. ignoring. l. ignorare; pref. in- not + the root of
   gnarus knowing, noscere to become acquainted with. see
   know, and cf. narrate.
   1. to be ignorant of or not acquainted with. archaic
      1913 webster

            philosophy would solidly be established, if men
            would more carefully distinguish those things that
            they know from those that they ignore. --boyle.
      1913 webster

   2. law to throw out or reject as false or ungrounded; --
      said of a bill rejected by a grand jury for lack of
      evidence. see ignoramus.
      1913 webster

   3. hence: to refuse to take notice of; to shut the eyes to;
      not to recognize; to disregard willfully and causelessly;
      as, to ignore certain facts; to ignore the presence of an
      objectionable person.
      1913 webster

            ignoring italy under our feet,
            and seeing things before, behind.     --mrs.
                                                  browning.
      1913 webster
see also:
ignored ignoring know narrate ignoramus 

Ignoring >> I Words
Ignoring, definition of term: Ignoring
ignoring_pag1.html