11-letter words containing o, r, p, i
- apron piece — (in a staircase) a header receiving the ends of rough strings, carriage pieces, and the joists of landings.
- arabidopsis — Any cress (or related plant) of the genus Arabidopsis.
- archbishops — Plural form of archbishop.
- archipelago — An archipelago is a group of islands, especially small islands.
- arctophilia — the practice of collecting teddy bears
- areographic — relating to areography
- arolla pine — a five-needled pine tree, Pinus cembra, found esp in mountain regions of Central Europe and yielding edible seeds
- ars poetica — the art of poetry
- arsonphobia — Pyrophobia.
- artophorion — pyx (def 1a).
- ascriptions — Plural form of ascription.
- asperations — Plural form of asperation.
- aspergation — the action of sprinkling, suffusing or irrigating with water
- aspersorium — a basin containing holy water with which worshippers sprinkle themselves
- asphyxiator — to produce asphyxia in.
- aspirations — a strong desire, longing, or aim; ambition: intellectual aspirations.
- asportation — the removal or taking away of something
- astraphobia — a fear of thunder and lightning
- astrophobia — A fear of stars and celestial space.
- atmospheric — Atmospheric is used to describe something which relates to the Earth's atmosphere.
- atriopeptin — any of several peptide hormones that are released by the atria of the heart in response to an abnormal increase in blood volume and that modulate blood pressure and the excretion of sodium, potassium, and water. Abbreviation: ANF.
- auditorship — the position or function of auditor
- autographic — of, for, or like an autograph or autographs
- automorphic — shaped and designed after oneself
- autotrophic — (of organisms such as green plants) capable of manufacturing complex organic nutritive compounds from simple inorganic sources such as carbon dioxide, water, and nitrates, using energy from the sun
- auxotrophic — designating or of a mutant organism requiring more nutritional substances than its prototrophic parent because it has lost the ability to make a certain enzyme
- avoirdupois — a system of weights used in many English-speaking countries. It is based on the pound, which contains 16 ounces or 7000 grains. 100 pounds (US) or 112 pounds (Brit) is equal to 1 hundredweight and 20 hundredweights equals 1 ton
- azido group — the univalent group N 3 −, derived from hydrazoic acid.
- azoospermia — absence of spermatozoa in the semen
- bar-hopping — Informal. to go to a succession of bars or nightclubs, with a brief stay at each.
- barographic — Measured using a barograph.
- base period — a neutral period used as a standard for comparison in constructing an index to express a variable factor: 100 is usually taken as the index number for the variable in the base period
- basidiocarp — the fruiting body of basidiomycetous fungi; the mushroom of agarics
- bibliograph — to put in a bibliography.
- bicorporate — having two bodies
- bimorphemic — pertaining to two morphemes
- biographize — to write a biography of (someone)
- biomorphism — a painted, drawn, or sculptured free form or design suggestive in shape of a living organism, especially an ameba or protozoan: The paintings of Joan Miró are often notable for their playful, bright-colored biomorphs.
- bioprinting — the construction of replacement body parts using techniques developed for three-dimensional printing
- bipartition — divided into or consisting of two parts.
- block print — a design printed by means of one or more blocks of wood or metal.
- boilerplate — A boilerplate is a basic written contract that can be used to make many different kinds of contracts.
- bonapartism — a political system resembling the rules of the Bonapartes, esp Napoleon I and Napoleon III: centralized government by a military dictator, who enjoys popular support given expression in plebiscites
- bonapartist — an adherent of the Bonapartes or their policies.
- booby prize — The booby prize is a prize given as a joke to the person who comes last in a competition.
- branchiopod — any crustacean of the mainly freshwater subclass Branchiopoda, having flattened limblike appendages for swimming, feeding, and respiration. The group includes the water fleas
- break point — a point which allows the receiving player to break the service of the server
- bridal shop — a shop that specializes in selling bridal wear
- british lop — a breed of large white pig with large drooping ears, originating from Wales, Cumberland, and Ulster
- broiler pan — a pan for broiling food