[a. Fr. ajutage, variant of ajoutage, f. ajouter to add, join on: see also ADJUSTAGE, another form of the word. Mod. Fr. has also ajoutage and ajustage, in accordance with the two forms ajouter and ajuster, to which the early ajouster has given rise: see ADJUST.] lit. An adjustment, adaptation, or addition: hence in Hydraulics, A tube adapted or adjusted to a pipe or aperture through which water passes, so as to determine the character of the jet; the efflux-tube or mouthpiece of an artificial fountain.
1707. Phillips, Ajutage, the spout for a Jet d’Eau, or Pipe that throws up Water in any Fountain.
1751. Chambers, Cycl., s.v., It is chiefly the diversity in the Ajutages that makes the different kinds of fountains.
1808. J. Webster, Nat. Philos., 117. It will issue at the adjutage or aperture.
1828. Hutton, Course of Math., II. 251. If an adjutage be turned upward, the jet will ascend to the height of the surface of the water in the vessel.
1829. U. K. S., Nat. Philos., I. Hydraulics, i. 4. The spouting or flowing of water through jets or adjutages.
1873. Atkinson, trans. Ganot’s Phys. (ed. 3), 157. A cylindrical or conical efflux tube or adjutage is fitted to the aperture.
