18-letter words containing i, s, m
- hamilton's problem — Hamiltonian problem
- hand it to someone — to give credit to someone
- handyman's special — fixer-upper.
- head disk assembly — (hardware, storage) (HDA) A sealed, high capacity mainframe hard disk with integral heads, as opposed to a removable disk.
- heat of combustion — the heat evolved when one mole of a substance is burnt in oxygen at constant volume
- hemicorporectomies — Plural form of hemicorporectomy.
- hemidemisemiquaver — a sixty-fourth note.
- hemorrhoidectomies — Plural form of hemorrhoidectomy.
- hideyoshi toyotomi — 1536–98, Japanese military dictator (1582–98). He unified all Japan (1590)
- higher mathematics — the advanced portions of mathematics, customarily considered as embracing all beyond ordinary arithmetic, geometry, algebra, and trigonometry.
- histamine headache — cluster headache.
- histocompatibility — the condition of having antigenic similarities such that cells or tissues transplanted from one (the donor) to another (the recipient) are not rejected.
- histomorphological — histology.
- home of the hirsel — Baron, title of Sir Alec Douglas-Home, formerly 14th Earl of Home. 1903–95, British Conservative statesman: he renounced his earldom to become prime minister of Great Britain and Northern Ireland (1963–64); foreign secretary (1970–74)
- homeowner's policy — a form of home insurance that provides compensation for damage, loss, or injury of property, personal belongings, or persons due to fire, theft, accidents, etc.
- honeysuckle family — the plant family Caprifoliaceae, typified by shrubs and woody vines having opposite leaves, clusters of usually flaring, narrow, tubular flowers, and various types of fruit, and including the elder, honeysuckle, snowberry, twinflower, and viburnum.
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- human rights group — a group that campaigns for human rights
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperaldosteronism — aldosteronism.
- hypercholesteremia — Alternative spelling of hypercholesteraemia.
- hypodermic syringe — a small glass piston or barrel syringe having a detachable, hollow needle for use in injecting solutions subcutaneously.
- hypoparathyroidism — Diminished concentration of parathyroid hormone in the blood, which causes deficiencies of calcium and phosphorus compounds in the blood and results in muscular spasms.
- immunodeficiencies — Plural form of immunodeficiency.
- 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.
- immunohistological — the microscopic study of tissues with the aid of antibodies that bind to tissue components and reveal their presence.
- imploded consonant — a consonant which is pronounced with or by implosion
- impressionableness — The quality of being impressionable.
- in abraham's bosom — at rest with one's dead ancestors
- in company with sb — If you feel, believe, or know something in company with someone else, you both feel, believe, or know it.
- in comparison with — when compared to
- in inverted commas — If you say in inverted commas after a word or phrase, you are indicating that it is inaccurate or unacceptable in some way, or that you are quoting someone else.
- in someone's power — under the control or sway of someone
- in someone's shoes — an external covering for the human foot, usually of leather and consisting of a more or less stiff or heavy sole and a lighter upper part ending a short distance above, at, or below the ankle.
- in terrorem clause — a clause in a will stating that a beneficiary who contests the will shall lose his or her legacy.
- in the name of sth — If you do something in the name of an ideal or an abstract thing, you do it in order to preserve or promote that thing.
- in the same breath — the air inhaled and exhaled in respiration.
- in your mind's eye — If you see something in your mind's eye, you imagine it and have a clear picture of it in your mind.
- incidental damages — law: incurred by contract breach
- incommensurability — not commensurable; having no common basis, measure, or standard of comparison.
- indiscriminateness — The state of being indiscriminate.
- indiscriminatingly — In an indiscriminating manner.
- industrial diamond — a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc
- information island — (jargon) A body of information (i.e. electronic files) that needs to be shared but has no network connection.
- 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.
- infrared astronomy — the study of infrared radiation emitted by celestial objects.
- initial commission — Initial commission is commission that is paid to someone who sells or recommends a financial product for the first time.
- 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.
- inseam measurement — (in tailoring) the measurement on a pair of trousers or on a person of the inside leg from the crotch to the ankle
- instruction manual — how-to, usage guide