13-letter words containing a, n, t, h, r
- openheartedly — Alt form open-heartedly.
- opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
- oprahfication — the perceived increase in people’s desire to discuss their emotions or personal problems, attributed to the influence of confessional television programmes
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organolithium — (organic chemistry) Describing any organic compound containing a carbon to lithium bond.
- organotherapy — the branch of therapeutics that deals with the use of remedies prepared from the organs of animals, as from the thyroid gland, the pancreas, or the suprarenal bodies.
- ornithischian — any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Compare saurischian.
- ornithomantic — relating to ornithomancy
- ornithophobia — Fear of birds.
- orthodiagonal — the axis in a crystal
- orthognathous — straight-jawed; having the profile of the face vertical or nearly so; having a gnathic index below 98.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthogonality — (mathematics, statistics) the property of being orthogonal.
- orthogonalize — to make (vectors, functions, etc.) orthogonal.
- orthopinakoid — a crystalline plane
- 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.
- painted horse — paint (def 6).
- parasynthesis — the formation of a word by the addition of a derivational suffix to a phrase or compound, as of greathearted, which is great heart plus -ed.
- parasynthetic — the formation of a word by the addition of a derivational suffix to a phrase or compound, as of greathearted, which is great heart plus -ed.
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- parental home — a school for problem children.
- parenthesized — to insert (a word, phrase, etc.) as a parenthesis.
- parenthetical — of, pertaining to, noting, or of the nature of a parenthesis: several unnecessary parenthetic remarks.
- parking light — The parking lights on a vehicle are the small lights at the front that help other drivers to notice the vehicle and to judge its width.
- parnell shout — a social occasion where each person in a group pays for his or her own entertainment or meal
- part exchange — If you give an old item in part exchange for something you are buying, the seller accepts the old item as part of the payment, so you do not have to give them as much money.
- 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.
- party machine — the internal organization of a political party, which decides its policies and directs its activities
- patent hammer — a hammer for dressing stone, having a head with two faces formed of a number of broad, thin chisels bolted side by side.
- patent holder — a person or company that holds a patent
- path-breaking — very original; ground-breaking
- pennyfarthing — a high bicycle of an early type, with one large wheel in front and one small wheel behind.
- penthemimeral — (of a caesura) occurring after the first penthemimer of a poetic line, i.e. in the middle of the third foot
- perchlorinate — to combine with the maximum proportion of chlorine.
- phalansterian — of or relating to a phalanstery.
- phalansterism — a model of society in which members of a community live in the same space and share common belongings
- phallocentric — a doctrine or belief centered on the phallus, especially a belief in the superiority of the male sex.
- phantasmagory — phantasmagoria.
- pharyngectomy — excision of part or all of the pharynx.
- phenmetrazine — a compound, C 1 1 H 1 5 NO, used chiefly to control the appetite in the treatment of obesity.
- 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.
- philanthropic — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.