13-letter words containing h, i, t, o, r
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- orchidologist — someone who is knowledgeable in orchidology
- orchiectomies — Plural form of orchiectomy.
- 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.
- ornithichnite — (paleontology) The footmark of a bird occurring in strata of stone.
- ornithischian — any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Compare saurischian.
- ornithologist — the branch of zoology that deals with birds.
- ornithomantic — relating to ornithomancy
- ornithophobia — Fear of birds.
- orthocephalic — having a medium or intermediate relation between the height of the skull and the breadth or length.
- orthodiagonal — the axis in a crystal
- orthodontists — Plural form of orthodontist.
- orthoepically — In terms of correct pronunciation.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthogonality — (mathematics, statistics) the property of being orthogonal.
- orthogonalize — to make (vectors, functions, etc.) orthogonal.
- orthographies — Plural form of orthography.
- orthographize — to spell correctly or according to the rules of orthography.
- orthopaedical — Pertaining to orthopaedics; characteristic of orthopaedia.
- orthopinakoid — a crystalline plane
- orthosilicate — a silicate mineral
- otherworldish — characterized by otherworldliness
- outside-right — a footballer who plays on the outside right wing of the field
- outstretching — Present participle of outstretch.
- over the hill — a natural elevation of the earth's surface, smaller than a mountain.
- over-shipment — an act or instance of shipping freight or cargo.
- 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).
- parthian shot — a sharp, telling remark, act, gesture, etc., made in departing.
- past historic — the simple past
- pathomorphism — abnormal morphology.
- perchlorinate — to combine with the maximum proportion of chlorine.
- petrochemical — a chemical substance obtained from petroleum or natural gas, as gasoline, kerosene, or petrolatum.
- petrophysical — relating to the analysis of the constitution and characteristics of rocks
- phallocentric — a doctrine or belief centered on the phallus, especially a belief in the superiority of the male sex.
- 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.
- photo-sharing — the publishing of digital photographs on the internet
- photoallergic — photosensitive.
- photochromism — the reversible transformation of something's colour due to exposure to electromagnetic radiation such as sunlight
- photoelectric — pertaining to the electronic or other electric effects produced by light.
- photofinisher — a person whose profession is photofinishing
- photographing — a picture produced by photography.
- photophoresis — the move away from a strong light source by previously suspended particles in a gas
- photoreaction — a chemical reaction that involves or requires light.
- phraseologist — a person who treats of or is concerned with phraseology.