[ spur-mi-deen, -din ]
/ ˈspɜr mɪˌdin, -dɪn /
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a biogenic polyamine, H2N(CH2)4NH(CH2)3NH2, formed from putrescine, occurring widely in nature and first identified in semen.
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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.
Words nearby spermidine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Medical definitions for spermidine
[ spûr′mĭ-dēn′ ]
A polyamine compound found in ribosomes and living tissues and having various metabolic functions. It was originally isolated from semen.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.