n. 1.  a.  The time stated in terms of the day, month, and year: What is the date of your birth? b.  A statement of calendar time, as on a document. 2.  a.  A particular point or period of time at which something happened or existed, or is expected to happen: the date of their wedding. b.   dates The years of someone's birth and death: Beethoven's dates were 1770 to 1827. 3.  The time during which something lasts; duration: "Summer's lease hath all too short a date" (Shakespeare). 4.  The time or historical period to which something belongs: artifacts of a later date. 6.  a.  An engagement to go out socially with another person, often out of romantic interest. b.  One's companion on such an outing. 7.  An engagement for a performance: has four singing dates this month. v.  dat·ed, dat·ing, dates  v.tr. 1.  To mark or supply with a date: date a letter. 2.  To determine the date of: date a fossil. 3.  To betray the age of: Pictures of old cars date the book. 4.  To go on a date or dates with. v.intr. Idioms: 1.  To have origin in a particular time in the past: This statue dates from 500 BC. 2.  To become old-fashioned. 3.  To go on dates.  out of date  No longer in style; old-fashioned: clothes that went out of date last year.  to date  Until now: To date, only half of those invited have responded.  up to date  In or into accordance with current information, styles, or technology: brought me up to date on the project's status. [Middle English, from Old French, from Medieval Latin data, from Latin data (Romae), issued (at Rome) (on a certain day), feminine past participle of dare, to give; see  dō- in the Appendix of Indo-European roots.] data·ble,  datea·ble adj. dater n.  | 
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