| maximum | (adjective) the greatest or most complete or best possible | Synonyms: maximal |
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| (noun) the greatest possible degree | Synonyms: level best, utmost, uttermost |
| (noun) the point on a curve where the tangent changes from positive on the left to negative on the right | - |
| (noun) the largest possible quantity | Synonyms: upper limit |
| minimum | (adjective) the least possible | Synonyms: minimal |
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| (noun) the point on a curve where the tangent changes from negative on the left to positive on the right | - |
| (noun) the smallest possible quantity | Synonyms: lower limit |
| optimum | (adjective) most desirable possible under a restriction expressed or implied | Synonyms: optimal |
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| (noun) most favorable conditions or greatest degree or amount possible under given circumstances | - |
| pessimum | (adjective) of an organism's environment; least favorable for survival | Synonyms: pessimal |
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