Definition of vital
- a vital clue
- vital resources
- vital organs
- blood and other vital fluids
These matters are vital to national defense.
The sciences are a vital part of the school curriculum.
your heart, lungs, and other vital organs
Exercise keeps her young and vital.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vital.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: extremely important
: needed by your body in order to keep living
: very lively or energetic
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