The prefix infra- indicates which of the following?

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Multiple Choice

The prefix infra- indicates which of the following?

Explanation:
Infra- signals position below or beneath. It is used to describe something that is under another structure or at a lower level. For example, infrared light lies just beyond the red end of the visible spectrum, effectively below red in wavelength terms. You also see infra- in terms like infracostal (below the ribs) or inframammary (below the breast). This is different from other directional prefixes: inter- means between, intra- means within, and supra- means above.

Infra- signals position below or beneath. It is used to describe something that is under another structure or at a lower level. For example, infrared light lies just beyond the red end of the visible spectrum, effectively below red in wavelength terms. You also see infra- in terms like infracostal (below the ribs) or inframammary (below the breast). This is different from other directional prefixes: inter- means between, intra- means within, and supra- means above.

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