Englishfor English speakers
weak
Adjective
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Weak is used to describe something that does not have a lot of strength.
The child was too weak to move the boulder.
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Something that is weak does not have a strong taste.
This tea tastes weak and watery. Do you have anything stronger?
cofibration
noun
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(mathematics) A particular form of mapping. A continuous mapping i\colon A \to X, where A and X are topological spaces, is a cofibration if it satisfies the homotopy extension property with respect to all spaces Y.