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13-letter words containing h, e, m, i, y

  • hyracotherium — eohippus.
  • hysterotomies — Plural form of hysterotomy.
  • ichneumon fly — any of numerous wasplike insects of the family Ichneumonidae, the larvae of which are parasitic on caterpillars and immature stages of other insects.
  • immunotherapy — treatment designed to produce immunity to a disease or enhance the resistance of the immune system to an active disease process, as cancer.
  • inductothermy — the production of fever by means of electromagnetic induction.
  • inhomogeneity — lack of homogeneity.
  • initial rhyme — beginning rhyme.
  • isobathytherm — a line on a chart or diagram of a body of water, connecting depths having the same temperature.
  • lake-urumiyeh — Lake. Urmia, Lake.
  • leigh-mallory — Sir Trafford Leigh [traf-erd lee] /ˈtræf ərd li/ (Show IPA), 1892–1944, British Air Force officer.
  • leonine rhyme — the form of internal rhyme used in leonine verse.
  • lymphadenitis — inflammation of a lymphatic gland.
  • lymphoid cell — a cell in the lymph glands that produces leukocytes.
  • lymphopoiesis — the formation of lymphocytes.
  • lymphopoietin — (protein) A cytokine protein that has a function in T cell maturation.
  • machine cycle — (processor)   The four steps which the CPU carries out for each machine language instruction: fetch, decode, execute, and store. These steps are performed by the control unit, and may be fixed in the logic of the CPU or may be programmed as microcode which is itself usually fixed (in ROM) but may be (partially) modifiable (stored in RAM). The fetch cycle places the current program counter contents (the address of the next instruction to execute) on the address bus and reads in the word at that location into the instruction register (IR). In RISC CPUs instructions are usually a single word but in other architectures an instruction may be several words long, necessitating several fetches. The decode cycle uses the contents of the IR to determine which gates should be opened between the CPU's various functional units and busses and what operation the ALU(s) should perform (e.g. add, bitwise and). Each gate allows data to flow from one unit to another (e.g. from register 0 to ALU input 1) or enables data from one output onto a certain bus. In the simplest case ("horizontal encoding") each bit of the instruction register controls a single gate or several bits may control the ALU operation. This is rarely used because it requires long instruction words (such an architecture is sometimes called a very long instruction word architecture). Commonly, groups of bits from the IR are fed through decoders to control higher level aspects of the CPU's operation, e.g. source and destination registers, addressing mode and ALU operation. This is known as vertical encoding. One way RISC processors gain their advantage in speed is by having simple instruction decoding which can be performed quickly. The execute cycle occurs when the decoding logic has settled and entails the passing of values between the various function units and busses and the operation of the ALU. A simple instruction will require only a single execute cycle whereas a complex instruction (e.g. subroutine call or one using memory indirect addressing) may require three or four. Instructions in a RISC typically (but not invariably) take only a single cycle. The store cycle is when the result of the instruction is written to its destination, either a register or a memory location. This is really part of the execute cycle because some instructions may write to multiple destinations as part of their execution.
  • martini-henry — a breech-loaded .45 caliber rifle adopted in 1871 as the standard British service weapon, using a center-fire metallic cartridge filled with black powder.
  • mass hysteria — a condition affecting a group of persons, characterized by excitement or anxiety, irrational behavior or beliefs, or inexplicable symptoms of illness.
  • mesaticephaly — the state or condition of being mesaticephalic or mesocephalic
  • metaphoricity — The power of a metaphor.
  • metaphysician — a person who creates or develops metaphysical theories.
  • metaphysicist — a person who creates or develops metaphysical theories.
  • metaphysicize — to think, write, etc, metaphysically
  • methyl violet — gentian violet
  • mischievously — maliciously or playfully annoying.
  • molly pitcher — Molly (Mary Ludwig Hays McCauley) 1754–1832, American Revolutionary heroine.
  • monkey orchid — a European orchid, Orchis simia, rare in Britain, having a short dense flower spike that opens from the top downwards. The flowers are white streaked with pink or violet and have five spurs thought to resemble a monkey's arms, legs, and tail
  • monkey-shines — Usually, monkeyshines. a frivolous or mischievous prank; monkey business.
  • morphemically — By means of, or in terms, of morphemes.
  • mount whitney — a mountain in E California: the highest peak in the Sierra Nevada Mountains and in continental US (excluding Alaska). Height: 4418 m (14 495 ft)
  • musicotherapy — the treatment of mental disorders with music
  • myelin sheath — a wrapping of myelin around certain nerve axons, serving as an electrical insulator that speeds nerve impulses to muscles and other effectors.
  • myrmecophiles — Plural form of myrmecophile.
  • mythographies — Plural form of mythography.
  • nanochemistry — (chemistry) The synthesis, analysis and characterization of chemical compounds at the nanoscale.
  • naphthylamine — (organic compound) Either of two isomeric primary amines derived from naphthalene; they occur in crude oil, and are used in the preparation of dyes and other compounds.
  • nithiocyamine — Amoscanate.
  • nonhaemolytic — relating to a transfusion reaction in which the red blood cells survive
  • oxyhemoglobin — the oxygen-carrying pigment of red blood cells that gives them their red color and serves to convey oxygen to the tissues: occurs in reduced form (deoxyhemoglobin) in venous blood and in combination with oxygen (oxyhemoglobin) in arterial blood. Symbol: Hb.
  • party machine — the internal organization of a political party, which decides its policies and directs its activities
  • perilymphatic — the fluid between the bony and membranous labyrinths of the ear.
  • phenomenality — highly extraordinary or prodigious; exceptional: phenomenal speed.
  • phrygian mode — an authentic church mode represented on the white keys of a keyboard instrument by an ascending scale from E to E.
  • physics model — a variety of software illustrating the movement of objects in reality, used by designers of video games to improve verisimilitude
  • physiognomies — the face or countenance, especially when considered as an index to the character: a fierce physiognomy.
  • physostigmine — an alkaloid, C 1 5 H 2 1 N 3 O 2 , used in the treatment of Alzheimer's disease to raise the level of the neurotransmitter acetylcholine and also as a miotic in glaucoma.
  • phytochemical — Also called phytonutrient. any of various bioactive chemical compounds found in plants, as antioxidants, considered to be beneficial to human health.
  • platyhelminth — any worm of the phylum Platyhelminthes; a flatworm.
  • polycythaemia — an abnormal condition of the blood characterized by an increase in the number of red blood cells. It can occur as a primary disease of unknown cause (polycythaemia vera or erythraemia) or in association with respiratory or circulatory diseases
  • polygamophile — a person who approves of or countenances polygamy, especially as practiced by others.
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