Astr- denotes which meaning?

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Multiple Choice

Astr- denotes which meaning?

Explanation:
Astr- comes from the Greek astron meaning star. In medical and scientific terms, this combining form signals a relation to stars, and it’s also used to describe shapes that resemble a star. That star-like sense is why the meaning highlighted is star-shaped—the term is pointing to a form that radiates like a star. The other options come from different roots (for example, a rainbow relates to color phenomena, the lung to pulmon-, and to eat to phag- or vore-), so they don’t match the astr- group.

Astr- comes from the Greek astron meaning star. In medical and scientific terms, this combining form signals a relation to stars, and it’s also used to describe shapes that resemble a star. That star-like sense is why the meaning highlighted is star-shaped—the term is pointing to a form that radiates like a star. The other options come from different roots (for example, a rainbow relates to color phenomena, the lung to pulmon-, and to eat to phag- or vore-), so they don’t match the astr- group.

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