12-letter words containing h, o, t, d, r
- mediatorship — the position of a mediator
- method actor — actor who follows the Method
- mitochondria — an organelle in the cytoplasm of cells that functions in energy production.
- model theory — the branch of logic that deals with the properties of models; the semantic study of formal systems
- monohydrates — Plural form of monohydrate.
- mother's day — a day, usually the second Sunday in May, set aside in honor of mothers.
- mother-naked — stark naked; as naked as when born.
- motherboards — Plural form of motherboard.
- motormouthed — (of a person) Being a motor mouth; inclined to talk too much.
- mouthbreeder — any of several fishes of the genera Tilapia and Haplochromis, that hatch and care for their young in the mouth.
- mouthbrooder — A freshwater cichlid fish that protects its eggs (and in some cases its young) by carrying them in its mouth.
- naughty word — a word that is considered to be rude
- neoorthodoxy — a movement in Protestant theology, beginning after World War I, stressing the absolute sovereignty of God and chiefly characterized by a reaction against liberal theology and a reaffirmation of certain doctrines of the Reformation.
- nether world — the infernal regions; hell.
- netherworlds — Plural form of netherworld.
- night editor — an editor responsible for getting a morning newspaper to press, for the night operations of a wire service, or the like.
- non-hydrated — chemically combined with water in its molecular form.
- north dakota — a state in the N central United States. 70,665 sq. mi. (183,020 sq. km). Capital: Bismarck. Abbreviation: ND (for use with zip code), N. Dak.
- north island — the northernmost principal island of New Zealand. 44,281 sq. mi. (114,690 sq. km).
- north riding — a former administrative division of Yorkshire, in N England, now part of North Yorkshire, Cleveland, and Durham.
- octahedrally — in an octahedral manner
- odontography — a treatise regarding the teeth
- odontophoran — a member of the family Odontophora
- off the grid — not using any of the services, such as bank accounts, public utilites, etc, that allow a person's activities to be monitored by the authorities
- on the cards — likely
- open-hearted — unreserved, candid, or frank: open-hearted advice.
- orchestrated — Simple past tense and past participle of orchestrate.
- orchidectomy — orchiectomy.
- ornithomimid — (zoology) Any member of the Ornithomimidae.
- orthodontics — the branch of dentistry dealing with the prevention and correction of irregular teeth, as by means of braces.
- orthodontist — the branch of dentistry dealing with the prevention and correction of irregular teeth, as by means of braces.
- orthodonture — orthodontia (def 2).
- orthodox jew — a Jew who adheres faithfully to the principles and practices of traditional Judaism as evidenced chiefly by a devotion to and study of the Torah, daily synagogue attendance if possible, and strict observance of the Sabbath, religious festivals, holy days, and the dietary laws.
- orthodromics — the act or art of sailing on a great circle
- orthopaedics — (used with a singular verb) the medical specialty concerned with correction of deformities or functional impairments of the skeletal system, especially the extremities and the spine, and associated structures, as muscles and ligaments.
- orthopaedist — Alternative spelling of orthopedist.
- orthopedical — (American spelling) Alternative form of orthopaedical.
- orthopteroid — (zoology) Any of the insects historically included in the order Orthoptera, including the cockroaches, earwigs, praying mantises, etc.
- orthovanadic — relating to orthovanadates
- otherworldly — of, relating to, or devoted to another world, as the world of imagination or the world to come.
- outstretched — to stretch forth; extend: to outstretch one's hand in welcome.
- overscutched — overworked; worn out
- overweighted — weighing too much or more than is considered normal, proper, etc.: overweight luggage; an overweight patient; two letters that may be overweight.
- overwithhold — to withhold too much.
- pentahydroxy — (of a molecule) containing five hydroxyl groups.
- phosphoreted — phosphureted.
- phosphureted — combined with phosphorus, especially in its lowest valence state.
- photo spread — a picture spread. See under spread (def 33).
- photoproduct — any product which is produced by a chemical reaction that uses light or other electromagnetic radiation to increase energy of particles
- pitched-roof — a roof sloping downward in two parts at an angle from a central ridge, so as to leave a gable at each end.