plural of hydrogen bond

Third-person singular simple present indicative form of hydrogen bond

(roofing) A device that contains a radioactive source to emit high velocity neutrons into a roof system. Reflecting neutrons are measured by a gauge that is used to detect hydrogen; the quantity of hydrogen detected may be linked to the pressure of water.

a measure of the average length of time that a soluble compound remains in a constructed reactor

plural of hydraulic retention time

Alternative spelling of nonhydrodynamic

(hydraulics, surface science) For a porous material, the ratio of porosity (ratio of volume of interstitial space filled with fluid to volume of material) to specific surface area (ratio of surface area in contact with fluid to volume of material); for a pipe or channel, the ratio of cross-sectional area to wetted perimeter.

A cyst due to infection by larvae of some species of the tapeworm Echinococcus.

(chemistry) Containing nitric and hydrochloric ions, see nitro-hydrochloric acid.

(chemistry) aqua regia