The Collaborative International Dictionary of English v.0.48:
Commemorate \Com*mem"o*rate\, v. t. [imp. & p. p.
Commemorated; p. pr. & vb. n. Commemorating.] [L.
commemoratus, p. p. of commemorare to remember; com- +
memorare to mention, fr. memor mindful. See Memory.]
To call to remembrance by a special act or observance; to
celebrate with honor and solemnity; to honor, as a person or
event, by some act of respect or affection, intended to
preserve the remembrance of the person or event; as, to
commemorate the sufferings and dying love of our Savior by
the sacrament of the Lord's Supper; to commemorate the
Declaration of Independence by the observance of the Fourth
We are called upon to commemorate a revolution.
Syn: See Celebrate.