The term 'Modus operandi' means-

• The term 'Modus operandi' means- ঘ) A method of procedure

• Modus operandi (Latin)
- English Meaning: A method of procedure; a particular way of doing something.
- Bangla Meaning: কার্যপ্রণালী; কর্মকৌশল।

• Ex. Sentence: The detective studied the criminal's modus operandi.
- Bangla Meaning: গোয়েন্দাটি অপরাধীর কার্যপদ্ধতি পর্যবেক্ষণ করলেন।

Source:
1. Cambridge Dictionary.
2. Merriam-Webster Dictionary.