9-letter words containing a, h, r, d
- hydramine — an amine derived from a glycol in which one hydroxyl is replaced by an amino group.
- hydrangea — any shrub belonging to the genus Hydrangea, of the saxifrage family, several species of which are cultivated for their large, showy flower clusters of white, pink, or blue.
- hydranths — Plural form of hydranth.
- hydrastis — goldenseal (def 2).
- hydrating — Present participle of hydrate.
- hydration — any of a class of compounds containing chemically combined water. In the case of some hydrates, as washing soda, Na 2 CO 3 ⋅10H 2 O, the water is loosely held and is easily lost on heating; in others, as sulfuric acid, SO 3 ⋅H 2 O, or H 2 SO 4 , it is strongly held as water of constitution.
- hydraulic — operated by, moved by, or employing water or other liquids in motion.
- hydraulus — a pipe organ of ancient Greece and Rome using water pressure to maintain the air supply.
- hydrazide — (chemistry) any compound derived from an oxoacid by replacing the hydroxide group with -NHNH2 or derived forms -NRNR2.
- hydrazine — Also called diamine. a colorless, oily, fuming liquid, N 2 H 4 , that is a weak base in solution and forms a large number of salts resembling ammonium salts: used chiefly as a reducing agent and a jet-propulsion fuel.
- hydrazoic — noting or pertaining to hydrazoic acid; triazoic.
- hydrazone — any of a class of compounds containing the group >C=NNH 2 .
- hydrocast — a process in which water is collected at various depths in a device with bottles clamped together, providing data on differing water characteristics.
- hydrolant — an urgent warning of navigational dangers in the Atlantic Ocean, issued by the U.S. Navy Hydrographic Office.
- hydrolase — an enzyme that catalyzes hydrolysis.
- hydronaut — a person trained to work in deep-sea vessels for research and rescue purposes.
- hydrosoma — hydrosome.
- hydrostat — an electrical device for detecting the presence of water, as from overflow or leakage.
- hydrovane — a vane on a seaplane conferring stability on water (a sponson) or facilitating take off (a hydrofoil)
- hydrozoan — any freshwater or marine coelenterate of the class Hydrozoa, including free-swimming or attached types, as the hydra, in which one developmental stage, either the polyp or medusa, is absent, and colonial types, as the Portuguese man-of-war, in which both medusa and polyp stages are present in a single colony.
- hyperacid — Highly acidic.
- hyperarid — being without moisture; extremely dry; parched: arid land; an arid climate.
- hypercard — A software package by Bill Atkinson for storage and retrieval of information on the Macintosh. It can handle images and is designed for browsing. The powerful customisable interactive user interface allows new applications to be easily constructed by manipulating objects on the screen, often without conventional programming, though the language HyperTalk can be used for more complex tasks.
- hypoderma — hypodermis.
- ideograph — an ideogram.
- idiograph — a mark or signature characteristic of a particular person, organization, etc.; trademark. Compare logotype (def 2).
- indraught — an inward flow or current, as of air or water.
- inhearsed — Simple past tense and past participle of inhearse.
- interdash — to intersperse with hasty strokes of a pen or other writing instrument
- iron hand — strict or harsh control: The general governed the country with an iron hand.
- jaghirdar — a person who holds a jaghire
- jalandhar — a city in N Punjab, in NW India.
- jharkhand — a state in NE India, created in 2000 from S Bihar. 28,833 sq. mi. (74,677 sq. km). Capital: Ranchi.
- lairdship — the condition of being a laird, or the rank of laird
- landshark — a person who makes inordinate profits by buying and selling land
- leathered — Simple past tense and past participle of leather.
- marchland — borderland.
- marshaled — a military officer of the highest rank, as in the French and some other armies. Compare field marshal.
- marshland — a region, area, or district characterized by marshes, swamps, bogs, or the like.
- mindshare — Relative public awareness of a phenomenon.
- negrohead — a type of low-quality India rubber
- nephridia — the excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface.
- nightward — heading towards night, heading westwards
- northland — the land or region in the north.
- northward — Also, northwards, northwardly. toward the north.
- octachord — any musical instrument with eight strings.
- octahedra — Plural form of octahedron.
- old harry — Older Use. the devil; Satan.
- ondograph — an instrument for graphically recording oscillatory variations, as in alternating currents.
- orcharder — One who owns or operates an orchard.