
A bladelike instrument used in fermenters and bioreactors to mix the medium continuously in order to maintain the rate of oxygen transfer and to help keep the cells in suspension.
noun
1. A mechanical device used to mix a liquid contained in a vessel.
2. A device for maintaining plasticity and preventing segregation of mixed concrete by agitation.
n.
A statesman who shakes the fruit trees of his neighbors -- to dislodge the worms.

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An agitator is a person who actively supports some ideology or movement with speeches and especially actions. The Agitators were a political movement as well as elected representatives of soldiers, including the New Model Army of Oliver Cromwell, during the English Civil War. They were also known as adjutators. Many of the ideas of the movement were later adopted by the Levellers.
The practice began in 1647 when the Long Parliament wanted to either disband the armies or send them to Ireland. Most soldiers opposed this. Eight of the cavalry regiments elected representatives they called commissioners, who presented the soldiers' complaints, including the fact that their payments were eight weeks late. On April 3, 1647, their letter was read in the House of Commons. Before the generals could return to London, parliament again decided to disband the army and set June 1 as the date that would happen.
Following the example of the Ironsides, other units followed suit and foot soldiers elected Agitators. The Agitators, with two officers from each regiment and the Generals formed a new body called the Army Council which after a meeting near Newmarket, Suffolk on Friday 4 June 1647 issued "A Solemne Engagement of the Army, under the Command of his Excellency Sir Thomas Fairfax" to Parliament on 8 June making their concerns known, and also the constitution of the Army Council so that Parliament would understand that the discontent was army-wide and had the support of both officers and other ranks. This Engagement was read out to the army at a general meeting on 5 June.
A few weeks later, there was another meeting at while the army was camped at Thriplow Heath near Royston, the soldiers refused the offers made by Parliament, and the agitators demanded a march towards London and the "purging" of the House of Commons, which did not happen, the movement gradually disintegrating
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Dansk (Danish)
n. - agitator, propagandist
Nederlands (Dutch)
voorvechter, schudder
Français (French)
n. - agitateur, fauteur (de troubles), trublion
Deutsch (German)
n. - Agitator, Rührwerk
Ελληνική (Greek)
n. - ταραξίας, ταραχοποιός, δημεγέρτης, υποκινητής, (φυσ.) αναδευτήρας
Italiano (Italian)
provocatore, agitatore
Português (Portuguese)
n. - agitador (m), misturador (m) mecânico (Téc.)
Русский (Russian)
агитатор, подстрекатель
Español (Spanish)
n. - agitador, alborotador, perturbador, revoltoso, insurrecto
Svenska (Swedish)
n. - agitator
中文(简体)(Chinese (Simplified))
煽动者
中文(繁體)(Chinese (Traditional))
n. - 煽動者
한국어 (Korean)
n. - 선동자, 정치운동자, 교란자
العربيه (Arabic)
(الاسم) مهيج : داعيه يهدف إثار الفكر العام لقضيه ما, ألخضاضه : آله ألخض
עברית (Hebrew)
n. - תעמלן, מכשיר לניעור או לערבוב נוזל
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