hydraté, adj., (chem.) hydrated.
hydraulique, n.f. and adj., hydraulics; hydraulic. Bélier —; (phys.) water-ram. Ouvrages —s; water-works. Puissance —; water-power.
hydre, n.f., hydra.
hydrocèle, n.f., hydrocele.
hydrocéphale, n.f., hydrocephalus.
hydrochlorate, n.m., (chem.) hydrochlorate.
hydrochlorique, adj., (chem.) hydrochloric.
hydrocotyle, n.f., (bot.) hydrocotyle.
hydrodynamique, n.f. and adj., hydrodynamics; hydrodynamic.
hydrogène, n.m., (chem.) hydrogen.