To think on, and revolve in the mind, beforehand; to contrive and design previously; as, to premeditate robbery
think or reflect beforehand or in advance; "I rarely premeditate, which is a mistake" consider, ponder, or plan (an action) beforehand; "premeditated murder
A premeditated crime is planned or thought about before it is done. In a case of premeditated murder a life sentence is mandatory. a premeditated crime or attack is planned in advance and done deliberately
Premeditation is thinking about something or planning it before you actually do it. The judge finally concluded there was insufficient evidence of premeditation. the act of thinking about something and planning it before you actually do it