18-letter words containing a, t, o, n, i
- lenticular process — a method for producing images with a three-dimensional effect by photographing on lenticulated film.
- lieutenant colonel — a commissioned officer ranking next below a colonel and next above a major.
- limestone pavement — a horizontal surface of exposed limestone in which the joints have been enlarged, cutting the surface into roughly rectangular blocks
- lincoln's birthday — February 12, a legal holiday in some states of the U.S., in honor of the birth of Abraham Lincoln.
- linear accelerator — an accelerator in which particles are propelled in straight paths by the use of alternating electric voltages that are timed in such a way that the particles receive increasing increments of energy.
- linear combination — a sum of products of each quantity times a constant: The expression aX + bY + cZ is a linear combination of X, Y, and Z, where a, b, and c are constants.
- lingual titubation — stuttering or stammering
- literae humaniores — (at Oxford University) the faculty concerned with Greek and Latin literature, ancient history, and philosophy; classics
- local examinations — (in the UK) any of various examinations, such as the GCE, set by university boards and conducted in local centres, schools, etc
- locally finite set — a collection of sets in a topological space in which each point of the space has a neighborhood that intersects a finite number of sets of the collection.
- logical complement — (logic) In Boolean algebra, the logical complement or negation of a Boolean value is the opposite value, given by the following truth table: A | -A --+--- T | F F | T -A is also written as A with a bar over it or with a small vertical line hanging from the right-hand end of the "-" (LaTeX \neg) or as A'. In the C programming language, it is !A and in digital circuit design, /A.
- lone-parent family — a family in which there is only one parent
- long-distance call — phone call: not local area
- luminous emittance — luminous flux emitted per unit area.
- macroinvertebrates — Plural form of macroinvertebrate.
- magnetic induction — Also called magnetic flux density. a vector quantity used as a measure of a magnetic field. Symbol: B.
- magnetic potential — a scalar quantity, analogous to the electric potential, defined at each point in a given magnetic field to be equal to the work done in bringing a unit north pole from infinity to the point.
- magnetic recording — the process of recording sound or other data on magnetic tape, wire, etc.
- magnetic resonance — the response by atoms, molecules, or nuclei subjected to a magnetic field to radio waves or other forms of energy: used in medicine for scanning
- magnetic variation — variation (def 8).
- magnetocrystalline — (physics) Describing the interaction between the magnetization and the crystal structure of a material.
- magnetoelectricity — electricity developed by the action of magnets.
- magnetogasdynamics — magnetohydrodynamics.
- magnetorheological — (physics) describing a substance whose rheological properties are modified by a magnetic field.
- major tranquilizer — antipsychotic (def 2).
- make a night of it — to cause an activity to last a night
- make someone tired — to annoy or vex someone
- malignant melanoma — skin cancer
- man-to-man marking — the tactic of assigning a particular player to stay close to a specific member of the opposing team to hamper his or her play
- mandelbrot, benoit — Benoit Mandelbrot
- maritime provinces — region in Canada
- market opportunity — a situation in which a company can meet an unsatisfied customer need before its competitors
- marriage encounter — a meeting with a person or thing, especially a casual, unexpected, or brief meeting: Our running into each other was merely a chance encounter.
- maternity hospital — birthing facility
- median lethal dose — the quantity of a lethal substance, as a poison or pathogen, or of ionizing radiation that will kill 50 percent of the organisms subjected to it in a specified time period. Symbol: LD 5 0.
- medical dictionary — a specialized dictionary covering terms used in the health professions by doctors, nurses, and others involved in allied health care services. A dictionary with authoritative spellings and definitions is a particularly crucial resource in medicine, where a misspelling or misunderstanding can have unfortunate consequences for people under care. Print dictionaries in this field may be sorted alphabetically or may be categorized according to medical specializations or by the various systems in the body, as the immune system and the respiratory system. The online Medical Dictionary on Dictionary.com allows alphabetical browsing in the combined electronic versions of more than one authoritative medical reference, insuring access to correct spellings, as well as immediate, direct access to a known search term typed into the search box on the site: A medical dictionary reveals that large numbers of medical terms are formed from the same Latin and Greek parts combined and recombined.
- mental reservation — an unexpressed doubt or qualification about a situation, person, etc.
- mental retardation — Usually Offensive. a developmental disorder characterized in varying degrees by a subnormal ability to learn, a substantially low IQ, and impaired social adjustment.
- menthol cigarettes — cigarettes that are flavoured with menthol
- merchant of venice — a comedy (1596?) by Shakespeare.
- metabolic syndrome — Pathology. a group of medical conditions present simultaneously in a patient, as high blood pressure, low HDL cholesterol levels, and an excess of abdominal fat, that increases a person's risk of heart disease, stroke, and diabetes. Also called insulin resistance syndrome.
- microcrystallinity — The condition of being microcrystalline.
- microencapsulation — the process of enclosing chemical substances in microcapsules.
- microenvironmental — Pertaining to a microenvironment.
- microgravitational — Of or pertaining to microgravitation.
- microinvertebrates — Plural form of microinvertebrate.
- microminiaturizing — Present participle of microminiaturize.
- micropalaeontology — the branch of palaeontology concerned with the study of microscopic fossils
- microsoft exchange — (messaging) Microsoft's messaging and enterprise collaboration server. Exchange's primary role is as an electronic mail message store but it can also store calendars, task lists, contact details, and other data.
- military policeman — A military policeman is a member of the military police.