dietetics

noun

di·​e·​tet·​ics ˌdī-ə-ˈte-tiks How to pronounce dietetics (audio)
plural in form but singular or plural in construction
: the science or art of applying the principles of nutrition to the diet

Word History

First Known Use

1679, in the meaning defined above

Time Traveler
The first known use of dietetics was in 1679

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Cite this Entry

“Dietetics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dietetics. Accessed 10 Sep. 2025.

Kids Definition

dietetics

noun
di·​etet·​ics
ˌdī-ə-ˈtet-iks
: the science of applying the principles of nutrition to feeding

Medical Definition

dietetics

noun, plural in form but singular or plural in construction
di·​etet·​ics -ˈtet-iks How to pronounce dietetics (audio)
: the science or art of applying the principles of nutrition to feeding
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