IPA: /ˌpɛk.jəˈleɪ.ʃən/
KK: /pɛkjuˈleɪʃən/
The act of stealing or misusing money or property that one is responsible for, especially in a position of trust.
The accountant was charged with peculation after it was discovered he had been stealing funds from the company.
Peculation is formed from "peculium" (from Latin, meaning private property or money) and the suffix "-ation" (indicating a process or action). The word refers to the act of embezzling or misappropriating funds, particularly in a public office context.
Think of 'peculium' which relates to private property or money, and remember that 'peculation' means the act of misappropriating or stealing money.