Definition of premeditated adjective from the Oxford Advanced Learner's Dictionary

 

premeditated

 adjective
adjective
BrE BrE//ˌpriːˈmedɪteɪtɪd//
 
; NAmE NAmE//ˌpriːˈmedɪteɪtɪd//
 
Terrorism
 
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(of a crime or bad action) planned in advance a premeditated attack The killing had not been premeditated. This was a callous, premeditated attack on a defenceless young man. opposite unpremeditated See related entries: Terrorism Word Origin mid 16th cent. (earlier (late Middle English) as premeditation): from Latin praemeditat- ‘thought out before’, from the verb praemeditari, from prae ‘before’ + meditari ‘meditate’ + -ed.
See the Oxford Advanced American Dictionary entry: premeditated