| n. 1.  The act of noting or observing; perception or attention: That detail escaped my notice. 2.  Respectful attention or consideration: grateful for the teacher's notice. 3.  A written or printed announcement: a notice of sale. 4.  a.  A formal announcement, notification, or warning, especially an announcement of one's intention to withdraw from an agreement or leave a job: gave my employer two weeks' notice; raised the price without notice. b.  The condition of being formally warned or notified: put us on notice for chronic lateness. 5.  A printed critical review, as of a play or book. tr.v.  no·ticed, no·tic·ing, no·tic·es  2.  To perceive with the mind; detect: noticed several discrepancies. 3.  Archaic   a.  To comment on; mention. b.  To treat with courteous attention. [Middle English, knowledge, from Old French, from Latin nōtitia, from nōtus, known, past participle of nōscere, to get to know; see  gnō- in the Appendix of Indo-European roots.] notic·er n. | 
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