1) French word used in English 2) Idea 3) Meditation 4) Thought 1) Idea 2) Thought 
• (n.) The act of thinking; thought; meditation; contemplation.
Cog`i·ta'tion noun [ Latin cogitatio : confer French cogitation .] The act of thinking; thought; meditation; contemplation. 'Fixed in cogitation deep.' Milton. 
[n] - a carefully considered thought about something 2. [n] - attentive consideration and meditation
cogitation 1. Thoughtful and attentive consideration and meditation. 2. A serious thought; a carefully considered reflection about something.
noun attentive consideration and meditation; `after much cogitation he rejected the offer`
concerted thought or reflection; meditation; contemplation: After hours of cogitation he came up with a new proposal. · the faculty of thinking: She was a serious student and had a great power of cogitation. · a thought; design or plan: to jot down one's cogitations.
attentive consideration and thought