Hyponyms (each of the following is a kind of lacrimator): chlorobenzylidenemalononitrile; CS gas (a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema)
Freebase(0.00 / 0 votes)Rate this definition: Renin. Renin, also known as an angiotensinogenase, is an enzyme that participates in the body's renin-angiotensin system âalso known as the renin-angiotensin-aldosterone axisâthat mediates extracellular volume, and arterial vasoconstriction.
Nein is defined as the German word for no. An example of nein is giving a negative answer to someone asking another in Berlin if they speak German. German. no. Origin of nein. 1  Link/Cite. 2  neilonellid. 3  neilonellids. 4  Neilson. 5  Neilson William Allan.