Here are some examples of how "memor" appears in English words:
* Memory: the ability to remember things.
* Memorial: something that serves as a reminder or tribute.
* Memorandum: a written message serving as a reminder.
* Memento: a reminder of a person or event.
* Memorize: to learn something by heart.
So, while "mem" doesn't stand alone, it's a key component in understanding the meaning of words related to remembering and reminding.