concerted thought or reflection; meditation; contemplation: After hours of cogitation he came up with a new proposal.
2.
the faculty of thinking: She was a serious student and had a great power of cogitation.
3.
a thought; design or plan: to jot down one's cogitations.
Origin: 1175–1225;Middle Englishcogitaciun < Anglo-French,Old French < Latincōgitātiōn- (stem of cōgitātiō), equivalent to cōgitāt(us) (see cogitate) + -iōn--ion
early 13c., from O.Fr. cogitaciun, from L. cogitationem, noun of action from cogitare "to think," apparently from co-agitare, from co- "together" + agitare, here in a sense of "to turn over in the mind."