(sciences, engineering) A tube in the shape of a capital U, in certain applications having a semipermeable membrane in the middle.

tubing; a system of tubes / (medicine) intubation / (military, historical) The process of lining a heavy gun by insertion of a tube of wrought iron, etc.

A well in which a stainless steel tube is bored directly down into an aquifer

(music) saxhorn

plural of sax tuba

plural of tubal abortion

(medicine) An abortion where the abortive products are expelled through the distal opening.

(medicine) A selective inhibitor of a particular histone deacetylase that is involved in many cellular processes, including degradation of misfolded proteins, cell migration, and cell-cell interaction.

(physics) Any device in which a flow of electrons (or ions) through a gas acts as a source of light

The removable, light-emitting part of a fluorescent lamp