How to import data (words and sentences) from Excel into PowerPoint?

I have data in 2 columns in Excel, which consists of a word in one column and a short definition for the word in the next column. These words and definitions change regularly. For presentation purposes, I need to pull the Excel data into a PowerPoint presentation that is preprogrammed in order to present the data.

I think about 5-6 words/definitions per page. To present effectively, the words and definitions need to become as I click on the return button (so I can present the word, then the definition, then the next word, then the next definition) instead of being visible all at once.

Basically (all would be centered-word would be larger and in bold):

Lessen
make or become less; diminish

Improve
make or become better

Diminish
make or become less

There can be up to 70 words/definitions although it changes weekly.

How can this be done?