aÂ·pexÂ·iÂ·fiÂ·caÂ·tion. Induced tooth root development or closure of the root apex by hard tissue deposition. apexification. a process of promoting apical closure of the root in an endodontically treated tooth by placement of calcium hydroxide paste or other tissue-tolerant material in the root canal after an apicoectomy.
Supernumerary is an adjective which means exceeding the usual number. When used as a noun, supernumerary means a temporary employee, additional society member, or extra manpower, usually in a function which has a temporary contract. In aeronautical context, a flight deck may contain a supernumerary seat. 2  This is a place for someone who doesn't have anything to do with the take off, flying, or landing of the aircraft. 3  Just a place for an extra body to observe.
Superkingdom may be considered as an equivalent of domain or empire or as an independent rank between kingdom and domain or subdomain. In some classification systems the additional rank branch (Latin: ramus) can be inserted between subkingdom and infrakingdom, e.g., Protostomia and Deuterostomia in the classification of Cavalier-Smith. Modern view The three domains of life