• Choose a category
• All
• Classic-Fiction

hydro noun : HYDROPOWER

hy·dro·car·bon noun : an organic compound containing only carbon and hydrogen

hy·dro·ceph·a·lus noun : abnormal increase in the amount of fluid in the cranial cavity accompanied by enlargement of the skull and atrophy of the brain

hy·dro·chlo·ric acid noun : a sharp-smelling corrosive acid used in the laboratory and in industry and present in dilute form in gastric juice

hy·dro·dy·nam·ics noun : a science that deals with the motion of fluids and the forces acting on moving bodies immersed in fluids

— hy·dro·dy·nam·ic adjective

hy·dro·elec·tric adjective : of or relating to production of electricity by waterpower

— hy·dro·elec·tric·i·ty noun

hy·dro·foil noun : a boat that has fins attached to the bottom by struts for lifting the hull clear of the water to allow faster speeds

hy·dro·gen noun [ORIGIN: F hydrogène, fr. Gk hydōr water + -genēs born; fr. the fact that water is generated by its combustion]

: a gaseous colorless odorless highly flammable chemical element that is the lightest of the elements

— hy·drog·e·nous adjective

hy·dro·ge·nate verb -nat·ed; -nat·ing : to combine or treat with hydrogen; especially : to add hydrogen to the molecule of

— hy·dro·ge·na·tion noun

hydrogen bomb noun : a bomb whose violent explosive power is due to the sudden release of atomic energy resulting from the fusion of light nuclei (as of hydrogen atoms)

hydrogen peroxide noun : an unstable compound of hydrogen and oxygen used esp. as an oxidizing and bleaching agent, an antiseptic, and a propellant

hy·dro·graph·ic adjective : of or relating to the description and study of bodies of water

— hy·drog·ra·pher noun

— hy·drog·ra·phy noun

hy·drol·o·gy noun : a science dealing with the properties, distribution, and circulation of water

— hy·dro·log·ic or hy·dro·log·i·cal adjective

— hy·drol·o·gist noun

hy·dro·ly·sis noun : a chemical decomposition involving the addition of the elements of water

hy·drom·e·ter noun : a floating instrument for determining specific gravities of liquids and hence the strength (as of alcoholic liquors)

hy·dro·pho·bia noun [ORIGIN: LL, fr. Gk, fr. hydōr water + phobos fear]

: RABIES

hy·dro·phone noun : an underwater listening device

1hydroplane noun 1 : a powerboat designed for racing that skims the surface of the water

2 : SEAPLANE

2hydroplane verb : to skid on a wet road due to loss of contact between the tires and road

hy·dro·pon·ics noun : the growing of plants in nutrient solutions

— hy·dro·pon·ic adjective

hy·dro·pow·er noun : hydroelectric power

hy·dro·sphere noun : the water (as vapor or lakes) of the earth

hy·dro·stat·ic adjective : of or relating to fluids at rest or to the pressures they exert or transmit

hy·dro·ther·a·py noun : the use of water esp. externally in the treatment of disease or disability

hy·dro·ther·mal adjective : of or relating to hot water

hy·drous adjective : containing water

hy·drox·ide noun 1 : a negatively charged ion consisting of one atom of oxygen and one atom of hydrogen

2 : a compound of hydroxide with an element or group

hy·e·na noun [ORIGIN: ME hyene, fr. L hyaena, fr. Gk hyaina, fr. hys hog]

: any of several large doglike carnivorous mammals of Asia and Africa

hy·giene noun 1 : a science concerned with establishing and maintaining good health

2 : conditions or practices conducive to health

— hy·gien·i·cal·ly adverb

— hy·gien·ist noun

hy·gien·ic adjective : having or showing good hygiene

Synonyms

aseptic, sanitary, sterile—more at SANITARY

hy·grom·e·ter noun : any of several instruments for measuring the humidity of the atmosphere

hy·gro·scop·ic adjective : readily taking up and retaining moisture

hying present participle of HIE

hy·men noun : a fold of mucous membrane partly closing the opening of the vagina

hy·me·ne·al adjective : NUPTIAL

hymn noun : a song of praise esp. to God

— hymn verb

Synonyms

anthem, canticle, carol,