lypressin
noun
ly·pres·sin
ˌlī-ˈpres-ᵊn 
: a vasopressin in which the eighth amino acid residue in its polypeptide chain is a lysine residue (as in pigs) rather than an arginine residue (as in most mammals including humans) and which is used especially as a nasal spray in the control of diabetes mellitus
called also lysine vasopressin
compare arginine vasopressinCite this Entry
“Lypressin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/lypressin. Accessed 30 Oct. 2025.
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