ambassador. 1  a diplomatic official of the highest rank, sent by one sovereign or state to another as its resident representative (ambassador extraordinary and plenipotentiary) 2  a diplomatic official of the highest rank sent by a government to represent it on a temporary mission, as for negotiating a treaty.
A bacteriostatic is a compound which has the effect of preventing bacterial growth. These agents do not kill bacteria like bactericidal compounds; instead, they limit further replication of bacteria at the site where they are introduced. Several antibiotic drugs are bacteriostatic agents, with tetracyclines being a notable example.
(yÅ-hÄ­mâ²bÄnâ²) n. An alkaloid, C21H26N2O3, that is derived from the bark of a tree, Pausinystalia johimbe, and is an alpha-blocker drug used in the form of its hydrochloride as a mydriatic, a treatment for erectile dysfunction, and formerly as an aphrodisiac.