coagulase. a bacterial enzyme that reacts with a cofactor found in blood plasma to catalyze the formation of fibrin from fibrinogen. It is produced by most of the virulent strains of staphylococci, and by Yersinia pestis.oagulase. a bacterial enzyme that reacts with a cofactor found in blood plasma to catalyze the formation of fibrin from fibrinogen. It is produced by most of the virulent strains of staphylococci, and by Yersinia pestis.
Definition of 'envoy'. Word Frequency. envoy (envÉÉª ) Word forms: plural envoys. 1. countable noun. An envoy is someone who is sent as a representative from one government or political group to another. 2. countable noun. An envoy is a diplomat in an embassy who is immediately below the ambassador in rank.
The word is also often used more liberally for persons who are known, without national appointment, to represent certain professions, activities and fields of endeavor. An ambassador is the ranking government representative stationed in a foreign capital. The host country typically allows the ambassador control of specific territory called an embassy, whose territory, staff, and vehicles are generally afforded diplomatic immunity in the host country. Under the Vienna Convention on Diplomatic Relations, an ambassador has the highest diplomatic rank.