We usually consider the half life of a drug in relation to the amount of the drug in plasma. A drug's plasma half-life depends on how quickly the drug is eliminated from the plasma. Half life is the time duration in which half of the radioactive element would undergo decay.
English Meaning: The name Rock is an English baby name. In English the meaning of the name Rock is: Rock. American Meaning: The name Rock is an American baby name.In American the meaning of the name Rock is: Rock.n English the meaning of the name Rock is: Rock. American Meaning: The name Rock is an American baby name. In American the meaning of the name Rock is: Rock.
Word Origin & History. rock stone, O.E. rocc (in stanrocc stone rock or obelisk), also from O.N.Fr. roque, from M.L. rocca (767), from V.L. *rocca, of uncertain origin, sometimes said to be from Celtic (cf. Bret. roch). Seems to have been used in M.E. principally for rock formations as opposed to individual stones.