a surgical instrument consisting of a sharp stylet enclosed in a tube (cannula) and inserted through the wall of a body cavity: the stylet is withdrawn permitting fluid to drain off through the tube
also sp. tro′char·
Origin of trocarFrench trocart from trois ( from Classical Latin tres, three) + carre, a side, face from carrer, to make square from Classical Latin quadrare (see quadrate): from the shape of the point
A sharp-pointed surgical instrument, used with a cannula to puncture a body cavity for fluid aspiration.
Origin of trocarFrench trocart trois three ( from Old French) ( from Latin trēs ; see trei- in Indo-European roots.) carre side of an instrument ( from Old French) ( from carrer to square ) ( from Latin quadrāre ) ( from quadrum square ; see kwetwer- in Indo-European roots.)