13-letter words containing n, o, r, h
- orthogonalize — to make (vectors, functions, etc.) orthogonal.
- orthohydrogen — the form of molecular hydrogen in which the nuclei of the two hydrogen atoms contained in the molecule have spins in the same direction.
- orthopinakoid — a crystalline plane
- orthopyroxene — a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene
- osborne house — a house near Cowes on the Isle of Wight: the favourite residence of Queen Victoria, who died there; now a convalescent home
- outstretching — Present participle of outstretch.
- over the moon — extremely joyful
- over-shipment — an act or instance of shipping freight or cargo.
- over-vehement — characterized by rancor or anger; violent: vehement hostility.
- overachieving — Present participle of overachieve.
- overbreathing — hyperventilation
- overhand knot — a simple knot of various uses that slips easily.
- overhastiness — the condition of being overhasty
- overnight bag — a travel bag large enough to hold personal articles and clothing for an overnight trip.
- overnourished — to sustain with food or nutriment; supply with what is necessary for life, health, and growth.
- painted horse — paint (def 6).
- pandora shell — any marine bivalve of the genus Pandora, having a scimitar-shaped shell with a pronounced ridge along the hinge.
- panharmonicon — a mechanical instrument that imitates orchestral sounds
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- parencephalon — a cerebral hemisphere
- parental home — a school for problem children.
- parnell shout — a social occasion where each person in a group pays for his or her own entertainment or meal
- parthenocarpy — the production of fruit without fertilization of an egg in the ovary.
- parthenopaeus — a son of Hippomenes and Atalanta, and one of the Seven against Thebes.
- parthenospore — a spore developed without fertilization.
- parthian shot — a sharp, telling remark, act, gesture, etc., made in departing.
- patent holder — a person or company that holds a patent
- perchlorinate — to combine with the maximum proportion of chlorine.
- perichondrium — the membrane of fibrous connective tissue covering the surface of cartilages except at the joints.
- phallocentric — a doctrine or belief centered on the phallus, especially a belief in the superiority of the male sex.
- phantasmagory — phantasmagoria.
- pharaoh hound — one of a breed of medium-sized gazehounds with a smooth coat, red to tan in color with white markings, and erect ears.
- pharmacognosy — materia medica (def 2).
- pharyngectomy — excision of part or all of the pharynx.
- pharyngoscope — an instrument for inspecting the pharynx.
- pharyngoscopy — an examination by means of a pharyngoscope.
- phenobarbital — a white, crystalline powder, C 1 2 H 1 2 N 2 O 3 , used as a sedative, a hypnotic, and as an antispasmodic in epilepsy.
- phenoxy resin — any of a class of resins derived from polyhydroxy ethers
- philanthropic — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
- phonautograph — a piece of equipment that records sound visually by detecting the sound waves and indicating them on a graph
- phonoreceptor — a receptor stimulated by sound waves.
- photo-sharing — the publishing of digital photographs on the internet
- photoelectron — an electron emitted from a system by the photoelectric effect.
- photofinisher — a person whose profession is photofinishing
- photographing — a picture produced by photography.
- photoreaction — a chemical reaction that involves or requires light.
- phrygian mode — an authentic church mode represented on the white keys of a keyboard instrument by an ascending scale from E to E.
- phycoerythrin — a red protein pigment occurring in red algae.
- physharmonica — a keyboard musical instrument fitted with free reeds, and which is an early form of harmonium
- phytoestrogen — an estrogen-like compound occurring naturally in plants of the legume family and in grains, vegetables, and fruits.