noun
Meaning 1
A compound released in the blood in some circumstances which causes contraction of smooth muscle and dilation of blood vessels. It is a peptide with nine amino-acid residues.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided