prime minister

chief executive in a parliamentary system of government, person who is elected the head of a country, leader of a nation

A prime minister is the most senior minister of  cabinet in the executive branch of government in a parliamentary system. The position is usually held by, but need not always be held by, a politician. In many systems the Prime Minister selects and can dismiss other members of the cabinet, and allocates posts to members within the Government. In most systems they are the presiding member and chairperson of the cabinet. In a minority of systems, notably in semi-presidential system of government, a prime minister is the official who is appointed to manage the civil service and execute the directives of the President.
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Noun
1. the person who holds the position of head of state in England
(synonym) PM, premier
(hypernym) head of state, chief of state
(member-holonym) British Cabinet

Noun
1. the person who is head of state (in several countries)
(synonym) chancellor, premier
(hypernym) head of state, chief of state

prime minister
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n. นายกรัฐมนตรี (syn. PM, leader)