13-letter words containing h, a, t, i, n
- nontheatrical — not relating to the theatre
- north african — the northern part of Africa, especially the region north of the tropical rain forest and comprised of Morocco, Algeria, Tunisia, Libya, and that part of Egypt west of the Gulf of Suez.
- north america — the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 feet (6187 meters); lowest, Death Valley, 276 feet (84 meters) below sea level. About 9,360,000 sq. mi. (24,242,400 sq. km).
- north chicago — a city in NE Illinois, on Lake Michigan.
- north ossetia — an autonomous republic in S European Russia, in the N Caucasus. 3100 sq. mi. (8029 sq. km) Capital: Vladikavkaz.
- north reading — a city in NE Massachusetts.
- north sea oil — oil extracted from deposits beneath the North Sea
- north vietnam — that part of Vietnam N of about 17° N; formerly a part of French Indochina; separate republic 1954–75.
- nothing loath — willing
- off the chain — wildly entertaining
- on a par with — If you say that two people or things are on a par with each other, you mean that they are equally good or bad, or equally important.
- on the parish — receiving parochial relief
- onychophagist — the practice of biting one's nails, especially when done habitually and as a symptom of emotional disturbance.
- 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
- optical bench — an apparatus, as a special table or rigid beam, for the precise positioning of light sources, screens, and optical instruments used for optical and photometric studies, having a ruled bar to which these devices can be attached and along which they can be readily adjusted.
- 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.
- 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
- 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
- outwash plain — Geology. a broad, sloping landform built of coalesced deposits of outwash.
- overbreathing — hyperventilation
- 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).
- panaesthetism — the belief that consciousness may be present in all matter
- panel heating — heating of a room or building by means of wall, ceiling, floor, or baseboard panels containing heating pipes or electrical conductors.
- pantheologist — a student of, or expert in, pantheology
- 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.
- 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.
- 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
- patch pumpkin — pumpkin
- path-breaking — very original; ground-breaking
- pathogenicity — the disease-producing capacity of a pathogen.
- pathognomonic — Medicine/Medical. characteristic or diagnostic of a specific disease: a pathognomonic sign of pneumonia.
- pennyfarthing — a high bicycle of an early type, with one large wheel in front and one small wheel behind.
- pentastichous — (of plant leaves) arranged in five vertical rows
- penthemimeral — (of a caesura) occurring after the first penthemimer of a poetic line, i.e. in the middle of the third foot