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Century Dictionary
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We didn't watch any particular station, and skipped all the "after" commentaries, because frankly, Hubby and I may disagree on some things, but we both feel that as somewhat educated, erudite, and informed adults with perfectly adequate hearing, we don't need a:: koff:: media hack "interpreting" the speeches we just heard "for" us.— Cheaper Than Therapy
We showed a strong relationship between the KD and IC50 of a compound, but only a modest relationship between koff and IC50 was detected and an apparent relationship between a compound's kon and its IC50 could not be discerned.— CiteULike: Everyone's library
It REALLY opened my eyes, and made me a helluva lot more nervous about the domestic threat to my liberties than I was before I started doing that * koff* consulting work.— Argghhh! The Home Of Two Of Jonah's Military Guys..
Judge Jed Rakoff (RAY'-koff) in Manhattan federal court on Tuesday released a copy of an order he signed last week.— IdahoStatesman.com News Updates
Sumarókoff was appointed the director, having, evidently, for a long time previously had full charge of all dramatic performances at court; and also, evidently, been expected to furnish plays.— A Survey of Russian Literature, with Selections

Century Dictionary (1)
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