13-letter words containing sy
- limbic system — a ring of interconnected structures in the midline of the brain around the hypothalamus, involved with emotion and memory and with homeostatic regulatory systems.
- metric system — a decimal system of weights and measures, adopted first in France but now widespread, universally used in science, mandatory for use for all purposes in a large number of countries, and favored for use in most (as in the U.S.). The basic units are the meter (39.37 inches) for length and the gram (15.432 grains) for mass or weight. Derived units are the liter (0.908 U.S. dry quart, or 1.0567 U.S. liquid quart) for capacity, being the volume of 1000 grams of water under specified conditions; the are (119.6 square yards) for area, being the area of a square 10 meters on a side; and the stere (35.315 cubic feet) for volume, being the volume of a cube 1 meter on a side, the term “stere,” however, usually being used only in measuring firewood. Names for units larger and smaller than these are formed from the above names by the use of the following prefixes: kilo-, 1000; hecto-, 100; deka-, 10; deci-, 0.1; centi-, 0.01; milli-, 0.001. To these are often added: tera-, one trillion; giga-, one billion; mega-, one million. With the addition of basic physical units it is now officially known by the French name Le Système International d'Unités (abbreviation SI, ) or in English as the International System of Units.
- monosyllabics — Plural form of monosyllabic.
- monosyllabism — monosyllabic character.
- monosyllables — Plural form of monosyllable.
- monosymmetric — zygomorphic.
- morpho-syntax — the study of the morphological and syntactic properties of linguistic or grammatical units.
- multisyllabic — polysyllabic.
- multisyllable — polysyllable.
- multisystemic — Of, pertaining to or affecting more than one system or organ of the body.
- needle biopsy — the removal of a small amount of tissue or cellular material with a long hollow surgical needle, performed for diagnostic purposes.
- neurosyphilis — Syphilis that involves the central nervous system.
- non-symbiotic — living in symbiosis, or having an interdependent relationship: Many people feel the relationship between humans and dogs is symbiotic.
- nonsynonymous — Not synonymous.
- nonsystematic — Not systematic.
- octosyllables — Plural form of octosyllable.
- parapsychosis — an abnormal psychosis
- parasymbiosis — the symbiotic relationship that occurs between certain species of fungi and lichens (which are themselves symbiotic associations between a fungus and an alga)
- parasynthesis — the formation of a word by the addition of a derivational suffix to a phrase or compound, as of greathearted, which is great heart plus -ed.
- parasynthetic — the formation of a word by the addition of a derivational suffix to a phrase or compound, as of greathearted, which is great heart plus -ed.
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- pennsylvanian — of or relating to the state of Pennsylvania.
- pentasyllabic — a word or line of verse of five syllables.
- pentasyllable — a word or line of verse of five syllables.
- pharmacognosy — materia medica (def 2).
- photosynthate — a compound formed by photosynthesis.
- plenum system — a type of air-conditioning system in which air is passed into a room at a pressure greater than atmospheric pressure
- pleurisy root — a North American milkweed, Asclepias tuberosa, whose root was used as a remedy for pleurisy.
- points system — a system used to assess applicants' eligibility for local authority housing, based on (points awarded for) such factors as the length of time the applicant has lived in the area, how many children are in the family, etc
- polysyllabism — a polysyllabic style or the use of multisyllabic words
- polysyllogism — an argument made up of a chain of syllogisms, the conclusion of each being a premise of the one following, until the last one.
- polysynthetic — (of a language) characterized by a prevalence of relatively long words containing a large number of affixes to express syntactic relationships and meanings. Many American Indian languages are polysynthetic. Compare analytic (def 3), synthetic (def 3).
- portal system — a vascular arrangement in which blood from the capillaries of one organ is transported to the capillaries of another organ by a connecting vein or veins.
- prefix syntax — prefix notation
- psychasthenia — Psychiatry. (no longer in technical use) a neurosis marked by fear, anxiety, phobias, etc.
- psychasthenic — a person who has psychasthenia
- psychoanalyse — to investigate or treat by psychoanalysis.
- psychoanalyst — a person trained to practice psychoanalysis.
- psychoanalyze — to investigate or treat by psychoanalysis.
- psychobabbler — a person who uses psychobabble
- psychobiology — the use of biological methods to study normal and abnormal emotional and cognitive processes, as the anatomical basis of memory or neurochemical abnormalities in schizophrenia.
- psychodynamic — Psychology. any clinical approach to personality, as Freud's, that sees personality as the result of a dynamic interplay of conscious and unconscious factors.
- psychogenesis — genesis of the psyche.
- psychogenetic — genesis of the psyche.
- psychographer — a person who writes a psychograph; a psychological or psychographic biographer.
- psychographic — Psychology. a graph indicating the relative strength of the personality traits of an individual.
- psychohistory — history or the writing of history employing the techniques of psychoanalysis to explore motivations, explain actions, etc.
- psychokinesis — the purported ability to move or deform inanimate objects, as metal spoons, through mental processes.
- psychological — of or relating to psychology.
- psychometrics — the measurement of mental traits, abilities, and processes.