COMMUNICATIONS RETINAL CYSTS ANDRETINOSCHISIS* BY C. G. KEITH DepartmentofPathology, Institute ofOphthalmology, University ofLondon SINCE the term retinoschisis came into commonophthalmological parlance, it has oftenbeenusedas thoughthe conditionwereadefinite entity, differing fromretinal cysts bythe process byWhichit arose.
The definition of imperative is something that has authority or is absolutely necessary. 1  An example of imperative is the power that a government has over its people.  An example of imperative is the decision to give a cesarean in a breach birth.
Princeton's WordNet(0.00 / 0 votes)Rate these synonyms: 1  imperative mood, imperative, jussive mood, imperative form(noun) a mood that expresses an intention to influence the listener's behavior. 2  imperative(adj) some duty that is essential and urgent. 3  imperative(adj) requiring attention or action.