12-letter words containing t, h, o
- ornithophily — pollination of flowers by birds
- ornithopters — Plural form of ornithopter.
- ornithoscopy — divination from the observation of birds
- ortho-cousin — parallel cousin.
- ortho-xylene — Chemistry. a clear, colorless, poisonous, flammable liquid, C 8 H 10 , the ortho isomer of xylene: used chiefly in the synthesis of phthalic anhydride.
- orthocenters — Plural form of orthocenter.
- orthoclastic — (of a crystal) having cleavages at right angles to each other.
- orthocousins — the children of two brothers or two sisters
- 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
- orthoformate — an ester of orthoformic acid.
- orthogenesis — Biology. Also called orthoselection. evolution of a species proceeding by continuous structural changes in a single lineage without presenting a branching pattern of descent. a theory that the evolution of a species in a continuous, nonbranching manner is due to a predetermined series of alterations intrinsic to the species and not subject to natural selection.
- orthogenetic — pertaining to or exhibiting orthogenesis.
- orthognathic — straight-jawed; having the profile of the face vertical or nearly so; having a gnathic index below 98.
- orthogonally — Mathematics. Also, orthographic. pertaining to or involving right angles or perpendiculars: an orthogonal projection. (of a system of real functions) defined so that the integral of the product of any two different functions is zero. (of a system of complex functions) defined so that the integral of the product of a function times the complex conjugate of any other function equals zero. (of two vectors) having an inner product equal to zero. (of a linear transformation) defined so that the length of a vector under the transformation equals the length of the original vector. (of a square matrix) defined so that its product with its transpose results in the identity matrix.
- orthographer — a person versed in orthography or spelling.
- orthographic — of or relating to orthography.
- 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.
- orthopterans — Plural form of orthopteran.
- orthopterist — someone who studies the Orthoptera
- orthopteroid — (zoology) Any of the insects historically included in the order Orthoptera, including the cockroaches, earwigs, praying mantises, etc.
- orthopterous — belonging or pertaining to the Orthoptera, an order of insects, including the cockroaches, mantids, walking sticks, crickets, grasshoppers, and katydids, characterized by leathery forewings, membranous hind wings, and chewing mouthparts.
- orthorhombic — noting or pertaining to a system of crystallization characterized by three unequal axes intersecting at right angles; rhombic; trimetric.
- orthosilicic — (chemistry) Of, relating to or derived from orthosilicic acid.
- orthotonesis — accentuation of a proclitic or enclitic
- orthotropism — Botany. orthotropic tendency or growth.
- orthotropous — Botany. (of an ovule) straight and symmetrical, with the chalaza at the evident base and the micropyle at the opposite extremity.
- orthovanadic — relating to orthovanadates
- osteichthyes — the class comprising the bony fishes.
- ostrich fern — a tall North American fern, Matteuccia struthiopteris, with large mature leaves that resemble ostrich plumes, a popular landscaping plant whose curled new leaves, called fiddleheads, are eaten as a vegetable.
- other income — Other income is income that does not come from a company's main business, such as interest.
- otherworldly — of, relating to, or devoted to another world, as the world of imagination or the world to come.
- out of a hat — as if by magic
- out of hours — Something that happens out of hours happens at a time that is not during the usual hours of business or work.
- out of humor — a comic, absurd, or incongruous quality causing amusement: the humor of a situation.
- out of phase — in an unsynchronized way
- out of reach — beyond arm's length
- out of shape — person: unfit
- out of sight — Slang. fantastic; great; marvelous: an out-of-sight guitarist.
- out of touch — not up to date
- out of whack — to strike with a smart, resounding blow or blows.
- out to lunch — a light midday meal between breakfast and dinner; luncheon.
- out-of-sight — Slang. fantastic; great; marvelous: an out-of-sight guitarist.
- outfangthief — the right of a lord to try a thief captured within his jurisdiction, regardless of where the thief is from
- outlandishly — In an outlandish manner.