15-letter words containing r, e, l, a
- medullary canal — the central area of a bone, containing marrow
- megalokaryocyte — Megakaryocyte.
- memorialization — to commemorate.
- memory location — (storage) A byte, word or other small unit of storage space in a computer's main memory that is identified by its starting address (and size).
- menstrual cycle — (in women of reproductive age) the cycle of physiological changes affecting the reproductive organs that takes place typically over a month and includes ovulation, thickening of the lining of the womb and menstruation if fertilization of the egg has not occurred
- mental disorder — any of the various forms of psychosis or severe neurosis.
- merchantability — The state of being merchantable.
- meridian circle — a transit instrument provided with a graduated vertical scale, used to measure the declinations of heavenly bodies and to determine the time of meridian transits.
- messier catalog — a catalog of nonstellar objects compiled by Charles Messier in 1784 and later slightly extended, now known to contain nebulae, galaxies, and star clusters.
- metallic luster — luster1 (def 8).
- metallo-organic — organometallic.
- metalloprotease — (enzyme) metalloproteinase.
- metallotolerant — (biology) Any extremophile that is able to tolerate a high concentration metal ions in its environment.
- metallurgically — the technique or science of working or heating metals so as to give them certain desired shapes or properties.
- metamorphically — In a metamorphic manner.
- metanitrophenol — any compound derived from phenol by the replacement of one or more of its ring hydrogen atoms by the nitro group.
- metatarsal arch — the short lateral arch of the foot formed by the heads of the metatarsal bones.
- methylpropanone — (organic compound) The industrial solvent butanone.
- metropolitanate — the office or province of a metropolitan
- metropolitanism — of, noting, or characteristic of a metropolis or its inhabitants, especially in culture, sophistication, or in accepting and combining a wide variety of people, ideas, etc.
- metropolitanize — to make metropolitan.
- mezzanine floor — intermediate level in a building
- michael faraday — Michael, 1791–1867, English physicist and chemist: discoverer of electromagnetic induction.
- michaelmas term — the autumn term at Oxford and Cambridge Universities, the Inns of Court, and some other educational establishments
- microaerophiles — Plural form of microaerophile.
- microaerophilic — Of, or relating to a microaerophile.
- middle american — average middle-class Americans as a group, as distinguished from the rich or poor or the politically extreme.
- military police — soldiers who perform police duties
- millionairesses — Plural form of millionairess.
- mineral kingdom — minerals collectively.
- mineral spirits — a volatile distillation product of petroleum, used as a thinner for paints and varnishes. Compare naphtha (def 1).
- mineralogically — With regard to mineralogy.
- minidisc player — a device for playing minidiscs
- ministerialists — Plural form of ministerialist.
- minority leader — the party member who directs the activities of the minority party on the floor of a legislative body, as of the U.S. Congress.
- missile address — ICBM address
- mitral stenosis — abnormal narrowing of the mitral valve usually resulting from disease, as rheumatic fever, and obstructing the free flow of blood from the atrium to the ventricle.
- mixture quality — Mixture quality is the degree to which a mixture is an ideal mixture.
- moccasin flower — the lady's-slipper.
- mock pennyroyal — pennyroyal (def 2).
- modern language — one of the literary languages currently in use in Europe, as French, Spanish, or German, treated as a departmental course of study in a school, college, or university.
- modulo operator — (mathematics) (mod) The operator that returns the remainder after integer division of its first argument by its second. Written as "%" in C and some other languages. Where the second argument is a power of two, the result can be calculated much more quickly using bitwise and with the appropriate bit-mask.
- mole salamander — ambystomid.
- molecular clock — the changes in the amino acid sequences of proteins that take place during evolution and speciation, and from which the dates of branchings of taxonomic groups can be deduced.
- molecular cloud — a cool dense interstellar region composed of a wide variety of molecules, mainly hydrogen, plus some dust, in which stars are forming
- molecular knife — a segment of genetic material that inhibits the reproduction of the AIDS virus by breaking up specific areas of the virus's genes.
- molecular sieve — a compound with molecule-size pores, as some sodium aluminum silicates, that chemically locks molecules in them: used in purification and separation processes.
- mollier diagram — a graph showing the enthalpy of a substance as a function of its entropy when some physical property of the substance, as temperature or pressure, is kept at a specified constant value.
- monomolecularly — In monomolecular terms.
- moral turpitude — conduct that is regarded as immoral.