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Word History
First Known Use
1895, in the meaning defined above
Time Traveler
The first known use of internal secretion was
in 1895
Dictionary Entries Near internal secretion
Cite this Entry
“Internal secretion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/internal%20secretion. Accessed 21 Nov. 2024.
Kids Definition
internal secretion
noun
: hormone
Medical Definition
internal secretion
nounLove words? Need even more definitions?
Merriam-Webster unabridged
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