supra vs. infra

supra vs. infra: What's the difference?

When referring to parts of a text, supra refers to what is above and infra to what is below. Supra is used to refer to or cite material that has already been mentioned, while infra is used to cite material yet to come in the text. They are also frequently used as prefixes, with supra- meaning “above” or “beyond the limits of” and infra- meaning “below.”