Dictionary

All Word
high muckamuck Noun an important or influential (and often overbearing) person
hayseed Noun a person who is not very intelligent or interested in culture
high wind Noun a very strong wind
headwind Noun wind blowing opposite to the path of a ship or aircraft
heterogenesis Noun the alternation of two or more different forms in the life cycle of a plant or animal
hydrogen bond Noun a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond
harmattan Noun a dusty wind from the Sahara that blows toward the western coast of Africa during the winter
hailstorm Noun a storm during which hail falls
half-light Noun a greyish light, as at dawn or dusk, or in dim interiors
heat energy Noun a form of energy that is transferred by a difference in temperature
histocompatibility Noun condition in which the cells of one tissue can survive in the presence of cells of another tissue
hot weather Noun a period of unusually high temperatures
hurricane Noun a severe tropical cyclone usually with heavy rains and winds moving a 73-136 knots, 12 on the Beaufort scale
hydroelectricity Noun electricity produced by water power
hysteresis Noun the lagging of an effect behind its cause
hydrostatic head Noun the pressure at a given point in a liquid measured in terms of the vertical height of a column of the liquid needed to produce the same pressure
heat of dissociation Noun the heat required for a fluid substance to break up into simpler constituents
heat of formation Noun the heat evolved or absorbed during the formation of one mole of a substance from its component elements
heat of solution Noun the heat evolved or absorbed when one mole of a substance is dissolved in a large volume of a solvent
heat of transformation Noun heat absorbed or radiated during a change of phase at a constant temperature and pressure
heat of condensation Noun heat liberated by a unit mass of gas at its boiling point as it condenses into a liquid
heat of fusion Noun heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature
heat of solidification Noun heat liberated by a unit mass of liquid at its freezing point when it solidifies
heat of sublimation Noun heat absorbed by a unit mass of material when it changes from a solid to a gaseous state
heat of vaporization Noun heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature
heat of vaporisation Noun heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature
heat ray Noun a ray that produces a thermal effect
heat wave Noun a wave of unusually hot weather
high beam Noun the beam of a car's headlights that provides distant illumination
horizontal parallax Noun the maximum parallax observed when the celestial body is at the horizon
holophyte Noun an organism that produces its own food by photosynthesis
head sea Noun a sea in which the waves are running directly against the course of the ship
hornwort Noun liverworts with slender hornlike capsules
hornwort Noun any aquatic plant of the genus Ceratophyllum
heliocentric parallax Noun the parallax of a celestial body using two points in the earth's orbit around the sun as the baseline
hamamelid dicot family Noun family of mostly woody dicotyledonous flowering plants with flowers often unisexual and often borne in catkins
hamamelid dicot genus Noun genus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkins
hepatica Noun a common liverwort
hepatica Noun any of several plants of the genus Hepatica having three-lobed leaves and white or pinkish flowers in early spring
hymenium Noun spore-bearing layer of cells in certain fungi containing asci or basidia
hygrophyte Noun a plant that grows in a moist habitat
hemlock Noun an evergreen tree
hemlock Noun soft coarse splintery wood of a hemlock tree especially the western hemlock
hemlock Noun large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers
hemlock Noun poisonous drug derived from an Eurasian plant of the genus Conium
hemlock tree Noun an evergreen tree
hickory pine Noun a small two-needled upland pine of the eastern United States (Appalachians) having dark brown flaking bark and thorn-tipped cone scales
hoop pine Noun pine of Australia and New Guinea
huon pine Noun Tasmanian timber tree with yellow aromatic wavy-grained wood used for carving and ship building
hiba arborvitae Noun slow-growing medium-large Japanese evergreen used as an ornamental