18-letter words containing or
- governor's council — a council chosen to assist or inform a governor on legislative or executive matters.
- gray manganese ore — manganite.
- gregorian calendar — the reformed Julian calendar now in use, according to which the ordinary year consists of 365 days, and a leap year of 366 days occurs in every year whose number is exactly divisible by 4 except centenary years whose numbers are not exactly divisible by 400, as 1700, 1800, and 1900.
- grist for the mill — If you say that something is grist for the mill, you mean that it is useful for a particular purpose or helps support someone's point of view.
- guidance counselor — advisor in schools
- gulf of california — an arm of the Pacific Ocean, between Sonora and Lower California
- haemorrhagic fever — any of a group of fevers, such as Ebola virus disease and yellow fever, characterized by internal bleeding or bleeding into the skin
- haulage contractor — a person or firm that transports goods by lorry
- have eyes only for — the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.
- have words with sb — If one person has words with another, or if two or more people have words, they have a serious discussion or argument, especially because one has complained about the other's behaviour.
- health care worker — A health care worker is someone who works in a hospital or health centre.
- heart-rate monitor — a machine that monitors or records a person's heart rate
- hell or high water — whatever difficulties may arise
- hemicorporectomies — Plural form of hemicorporectomy.
- hemorrhoidectomies — Plural form of hemorrhoidectomy.
- hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
- hexaphosphorylated — (biochemistry) phosphorylated with six units of phosphoric acid.
- higher-order macro — A means of expressing certain higher-order functions in a first order language. Proposed by Phil Wadler. Higher-order macros cannot be recursive at the top level but they may contain recursive definitions. E.g. See partial evaluation.
- histomorphological — histology.
- historical fiction — the genre of literature, film, etc., comprising narratives that take place in the past and are characterized chiefly by an imaginative reconstruction of historical events and personages.
- historical geology — the branch of geology dealing with the history of the earth.
- historical present — the present tense used in narrating a past event as if happening at the time of narration.
- honorable ordinary — any of the ordinaries believed to be among those that are oldest or that were the source of the other ordinaries, as the chief, pale, fess, bend, chevron, cross, and saltire.
- honorary secretary — a unpaid person who is one of the managers of an organization
- horizontal tasting — a tasting of wines from the same year but from different vineyards, producers, etc.
- horseless carriage — an automobile: The horse and buggy were eventually replaced by the horseless carriage.
- horses for courses — a policy, course of action, etc modified slightly to take account of specific circumstances without departing in essentials from the original
- hydrofluorocarbons — Plural form of hydrofluorocarbon.
- hydroxychloroquine — a colorless crystalline solid, C 18 H 26 ClN 3 O, used in the treatment of malaria, lupus erythematosus, and rheumatoid arthritis.
- hyper-metaphorical — a figure of speech in which a term or phrase is applied to something to which it is not literally applicable in order to suggest a resemblance, as in “A mighty fortress is our God.”. Compare mixed metaphor, simile (def 1).
- hyperphosphorylate — To phosphorylate fully.
- hypophosphorylated — (biochemistry) phosphorylated to a less than normal extent, or less than fully.
- ifs, ands, or buts — a supposition; uncertain possibility: The future is full of ifs.
- imaginary operator — An imaginary operator is the part of a complex number that defines the magnitude of the part of the complex number at right angles to the real number part.
- immunofluorescence — any of various techniques for detecting an antigen or antibody in a sample by coupling its specifically interactive antibody or antigen to a fluorescent compound, mixing with the sample, and observing the reaction under an ultraviolet-light microscope.
- in accordance with — conforming to
- in one's own words — If you say something in your own words, you express it in your own way, without copying or repeating someone else's description.
- in terrorem clause — a clause in a will stating that a beneficiary who contests the will shall lose his or her legacy.
- in the last resort — You use in the last resort when stating the most basic or important fact that will still be true in a situation whatever else happens.
- in the mood for/to — If you say that you are in the mood for something, you mean that you want to do it or have it. If you say that you are in no mood to do something, you mean that you do not want to do it or have it.
- inferior vena cava — See under vena cava.
- information bureau — an office where you can go to get information
- information centre — help desk, office
- information island — (jargon) A body of information (i.e. electronic files) that needs to be shared but has no network connection.
- information office — an office where you can go to get information
- information system — a computer system or set of components for collecting, creating, storing, processing, and distributing information, typically including hardware and software, system users, and the data itself: the use of information systems to solve business problems.
- information theory — the mathematical theory concerned with the content, transmission, storage, and retrieval of information, usually in the form of messages or data, and especially by means of computers.
- informatory double — a double intended to inform one's partner that one has a strong hand and to urge a bid regardless of the strength of his or her hand.
- inner automorphism — an automorphism that maps an element x into an element of the form axa −1 where a −1 is the inverse of a.
- inquisitor-general — the head of the Spanish court of Inquisition