van.ˈtēgəm-, |van.(ˌ)tyā|gem- noun
Usage: usually capitalized V&T
Etymology: after P.E.L. Van Tieghem died 1914 French botanist
: a device used for the microscopic observation of microorganisms usually in hanging-drop cultures and consisting of a ring or short tube fixed to a glass slide or Petri dish and capped with a cover glass