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spermine

American

[spur-meen, -min] / ˈspɜr min, -mɪn /

noun

Biochemistry.

a polyamine, H 2 N(CH2 ) 3 NH(CH2 ) 4 NH(CH2 ) 3 NH 2 , formed from spermidine and occurring in all cells, especially prevalent in semen, sputum, pancreatic tissue, and certain yeasts.

spermine British

/ -mɪn, ˈspɜːmiːn /

noun

a white or colourless basic water-soluble amine that is found in semen, sputum, and animal tissues; diaminopropyltetramethylenediamine. Formula: C 10 H 26 N 4

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of spermine

First recorded in 1890–95; sperm- + -ine ²

Example Sentences

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spermine

In the context of neurodegenerative disorders such as Alzheimer's and Parkinson's, earlier work had already suggested that spermine can protect nerve cells and ease age-related memory problems.

From Science Daily ● Nov. 27, 2025

A naturally occurring molecule in the body called spermine is offering new hope.

From Science Daily ● Nov. 27, 2025

The researchers saw that spermine supports the body's immune system in removing nerve-damaging amyloid protein deposits.

From Science Daily ● Nov. 27, 2025

In connection with neurodegenerative diseases such as Alzheimer's or Parkinson's, there has previously been evidence that spermine can protect nerve cells and alleviate age-related memory loss.

From Science Daily ● Nov. 27, 2025

I believe in Koch and in spermine and praise God for it.

From Letters of Anton Chekhov by Garnett, Constance

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023