(Britain) monkey in the middle

A component that utilizes venturi effect to inject a small amount of one fluid into the flow of another fluid. Used e.g. to inject fertilizer solution or other chemicals to water in irrigation systems.

(transitive, intransitive) To collectively approve a nominee for an office or position as a result of voting.

The practice of placing the newborn in a crib near the mother's bed, instead of in a nursery, during the hospital stay.

(idiomatic) Very valuable.

In the middle of a storyline.

Beginning in the middle of its storyline: said of a work of literature or a film.

Narrative presented in medias res.

A dose of an antigen designed to strengthen immunity after an earlier immunizing dose.

(of a person) Fit, healthy. / In a state suitable for an intended task.