18-letter words containing y
- montgomery village — a city in central Maryland.
- moog (synthesizer) — an early musical synthesizer
- mountain cranberry — cowberry
- mucopolysaccharide — (formerly) glycosaminoglycan.
- multifunctionality — The condition of being multifunctional.
- multiply-connected — connected but not simply-connected.
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- music to your ears — If something that you hear is music to your ears, it makes you feel very happy.
- mutual aid society — A mutual aid society is an organization that provides benefits or other help to its members when they are affected by things such as death, sickness, disability, old age, or unemployment.
- mutually exclusive — of or relating to a situation involving two or more events, possibilities, etc., in which the occurrence of one precludes the occurrence of the other: mutually exclusive plans of action.
- mutually recursive — recursion
- my lips are sealed — If you tell someone that your lips are sealed, you are promising them that you will keep a secret that they have told you.
- myeloproliferative — (medicine) of or pertaining to the presence of an abnormal proliferation of myelopoietic cells (from bone marrow).
- naberezhnye chelny — a port in the Tatar Autonomous Republic, in the Russian Federation in Asia,e of Kazan, on the Kama River.
- natural philosophy — natural science.
- nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
- needlestick injury — an injury that is caused by accidentally pricking the skin with a hypodermic needle
- neo-pythagoreanism — a philosophical system, established in Alexandria and Rome in the second century b.c., consisting mainly of revived Pythagorean doctrines with elements of Platonism and Stoicism.
- network byte order — (networking) The order in which the bytes of a multi-byte number are transmitted on a network - most significant byte first (as in "big-endian" storage). This may or may not match the order in which numbers are normally stored in memory for a particular processor.
- neuroendocrinology — the study of the anatomical and physiological interactions between the nervous and endocrine systems.
- neuroophthalmology — the branch of ophthalmology that deals with the optic nerve and other nervous system structures involved in vision.
- neurophysiological — the branch of physiology dealing with the functions of the nervous system.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- neuropsychological — Of or pertaining to neuropsychology, the relation or combination of brain and mind.
- neutrino astronomy — the branch of astronomy dealing with the detection and measurement of neutrinos emitted by the sun and other celestial objects.
- new storage system — (storage) (NSS) A major Multics implementation project during the 1970s. The initial Multics file system design had evolved from the one-huge-disk world of CTSS. When multiple disk units were used they were just assigned increasing ranges of disk addresses, so a segment could have pages scattered over all disks on the system. This provided good I/O parallelism but made crash recovery expensive. NSS redesigned the lower levels of the file system, introducing the concepts of logical volume and physical volume and a mapping from a Multics directory branch to a VTOC entry for each file. The new system had much better recovery performance in exchange for a small space and performance cost.
- ninety-ninety rule — (humour) "The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time". An aphorism attributed to Tom Cargill of Bell Labs, and popularised by Jon Bentley's September 1985 "Bumper-Sticker Computer Science" column in "Communications of the ACM". It was there called the "Rule of Credibility", a name which seems not to have stuck.
- nobiliary particle — a preposition forming part of a title of nobility or surname, as French de or German von.
- non-accountability — the state of being accountable, liable, or answerable.
- non-responsibility — the state or fact of being responsible, answerable, or accountable for something within one's power, control, or management.
- nonachlorobiphenyl — (organic compound) Either of three isomers of the polychlorinated biphenyl containing nine chlorine atoms.
- nonvolatile memory — computer memory that can retain stored information even when not powered, for example read-only memory
- normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
- northeast by north — a point on the compass 11°15′ north of northeast. Abbreviation: NEbN.
- northern territory — an administrative division of N central Australia, on the Timor and Arafura Seas: the Arunta Desert lies in the east, the Macdonnell Ranges in the south, and Arnhem Land in the north (containing Australia's largest Aboriginal reservation); the Ashmore and Cartier Islands constitute a separate Australian External Territory. Capital: Darwin. Pop: 233 300 (2012 est). Area: 1 347 525 sq km (520 280 sq miles)
- northwest by north — a point on the compass, 11°15′ north of northwest. Abbreviation: NWbN.
- not a pretty sight — If you say that someone or something is not a pretty sight, you mean that it is not pleasant to look at.
- not by a long shot — absolutely not
- not take kindly to — not welcome
- now you're talking — at last you're saying something agreeable
- nuclear capability — If a country has nuclear capability, it is able to produce nuclear power and usually nuclear weapons.
- numerical analysis — the branch of mathematics dealing with methods for obtaining approximate numerical solutions of mathematical problems.
- numerical identity — the relation that holds between two relata when they are the selfsame entity, that is, when the terms designating them have the same reference
- numerical taxonomy — classification of organisms by a comparison of large numbers of observable characteristics that are given equal value instead of being weighted according to possible evolutionary significance.
- nursery facilities — places where young children are looked after
- oak-leaf hydrangea — a shrub, Hydrangea quercifolia, of the southeastern U.S., having lobed leaves and pyramidal clusters of white flowers.
- octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
- of your own making — If you say that something such as a problem you have is of your own making, you mean you have caused or created it yourself.
- officer of the day — an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.
- offset lithography — offset (def 6).