adjective The smallest possible amount, quantity, or degree.
With minimal effort, you won't be able to achieve all your dreams.
adjective Among elements of some collection, such that no other element is greater (with respect to some given partial order).
With respect to the ordering induced by set-theoretic inclusion, the power set of the set of natural numbers has a unique minimal element: the empty set.
adjective Characterised by the use of simple form or structures.
adjective Characterised by the repetition and gradual alteration of short phrases.
noun Something very small; a tiny part or fragment.