n. 1. pl.   dozen  Abbr. doz. or   dz. A set of 12. 2.   dozens An indefinite, large number: dozens of errands to run. adj.  Twelve. [Middle English dozeine, from Old French dozaine, from doze, twelve, ultimately from Latin duodecim : duo, two; see  dwo- in the Appendix of Indo-European roots + decem, ten; see  dek in the Appendix of Indo-European roots.] dozenth (-ənth) adj.  | 
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