15-letter words starting with h

harmonic motion — periodic motion consisting of one or more vibratory motions that are symmetric about a region of equilibrium, as the motion of a vibrating string of a musical instrument.
harmonic series — a series in which the reciprocals of the terms form an arithmetic progression.
harun al-rashid — a.d. 764?–809, caliph of Baghdad 786–809: one of the greatest Abbasids, he was made almost a legendary hero in the Arabian Nights.
harun ar-rashid — a.d. 764?-809; caliph of Baghdad (786-809): given popular fame as a hero of The Arabian Nights
has had its day — If you say that something has had its day, you mean that the period during which it was most successful or popular has now passed.
haulage company — a firm that transports goods by lorry
hausdorff space — a topological space in which each pair of points can be separated by two disjoint open sets containing the points.
haute-normandie — a region of NW France, on the English Channel: generally fertile and flat
hautes-pyrenees — a department in SW France. 1751 sq. mi. (4535 sq. km). Capital: Tarbes.
have (down) pat — to know or have memorized thoroughly
have a crush on — be attracted to: sb
have a derry on — to have a prejudice or grudge against
have a go at sb — If someone has a go at you, they criticize you, often in a way that you feel is unfair.
have a good day — pleasantry
have a nice day — pleasantry
have a right to — be entitled to
have a smack at — to attempt
have a way with — manner, mode, or fashion: a new way of looking at a matter; to reply in a polite way.
have a whack at — to aim a blow at
have an edge on — a line or border at which a surface terminates: Grass grew along the edges of the road. The paper had deckle edges.
have an eye for — the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.
have got it bad — to be infatuated
have had enough — be weary, exasperated
have it so good — to have so many benefits, esp material benefits
have itchy feet — to be restless; have a desire to travel
have no use for — to employ for some purpose; put into service; make use of: to use a knife.
have nothing on — be naked
have one's pick — If you have your pick of a group of things, you are able to choose any of them that you want.
have the ear of — to be in a position to influence
have to do with — Usually, haves. an individual or group that has wealth, social position, or other material benefits (contrasted with have-not).
have to lump it — If you say that someone will have to lump it, you mean that they must accept a situation or decision whether they like it or not.
have words with — to argue angrily with
haversian canal — a microscopic channel in bone, through which a blood vessel runs.
hawaiian guitar — a six-to-eight-string electric guitar, fretted with a piece of metal or bone to produce a whining, glissando sound, played in a horizontal position usually resting on the performer's knees or on a stand, and much used by country music performers.
hawaiian pidgin — an English-based creole widely spoken in Hawaii.
hay conditioner — either of two machines, one designed to crush stems of hay, the other to break and bend them, in order to cause more rapid and even drying
hazard analysis — risk assessment
hazardous waste — any industrial by-product, especially from the manufacture of chemicals, that is destructive to the environment or dangerous to the health of people or animals: Hazardous wastes often contaminate ground water.
head over heels — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
head-up display — an electronic display of data from instruments or other sources projected at eye level so that a driver or pilot sees it without looking away from the road or course. Abbreviation: HUD.
heads will roll — If you say that heads will roll as a result of something bad that has happened, you mean that people will be punished for it, especially by losing their jobs.
health benefits — positive effects on health
health minister — a government minister who is responsible for health
hearing ear dog — a dog that has been trained to alert a hearing-impaired person to sounds, as a telephone ringing or dangerous noises.
hearing-ear dog — a dog that has been trained to alert a hearing-impaired person to sounds, as a telephone ringing or dangerous noises.
heart condition — cardiac disorder
heart of hearts — the depths of one's conscience or emotions
heart operation — a surgical operation performed on the heart
heart tamponade — tamponade (def 2).
heart's content — Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.

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