18-letter words containing r, o, p, e, y
- hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
- hexaphosphorylated — (biochemistry) phosphorylated with six units of phosphoric acid.
- hilary of poitiers — Saint, a.d. c300–368, French bishop and theologian.
- homeowner's policy — a form of home insurance that provides compensation for damage, loss, or injury of property, personal belongings, or persons due to fire, theft, accidents, etc.
- hungry programmers — (body) A group of programmers producing free software.
- hydroxynaphthalene — naphthol.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyper-metaphorical — a figure of speech in which a term or phrase is applied to something to which it is not literally applicable in order to suggest a resemblance, as in “A mighty fortress is our God.”. Compare mixed metaphor, simile (def 1).
- hyperaldosteronism — aldosteronism.
- hypercholesteremia — Alternative spelling of hypercholesteraemia.
- hyperconcentration — the act of concentrating; the state of being concentrated.
- hypermodern school — a style of chess characterized by control of the centre from the flanks
- hypernationalistic — a person devoted to nationalism.
- hyperphosphorylate — To phosphorylate fully.
- hyperproliferation — (biology) An abnormally high rate of proliferation of cells by rapid division.
- hypersensitization — Photography. to treat (a film or emulsion) so as to increase its speed.
- hypersexualisation — Alternative spelling of hypersexualization.
- hypersexualization — The act or process of hypersexualizing.
- hypochromic anemia — an anemia characterized by an abnormally low concentration of hemoglobin in the red blood cells, often due to iron deficiency.
- hypodermic syringe — a small glass piston or barrel syringe having a detachable, hollow needle for use in injecting solutions subcutaneously.
- hypogastric artery — iliac artery (def 3).
- hypophosphorylated — (biochemistry) phosphorylated to a less than normal extent, or less than fully.
- hypophysis cerebri — the master endocrine gland, attached by a stalk to the base of the brain.
- imaginary operator — An imaginary operator is the part of a complex number that defines the magnitude of the part of the complex number at right angles to the real number part.
- in praise of folly — Latin Moriae Encomium. a prose satire (1509) by Erasmus, written in Latin and directed against theologians and church dignitaries.
- internet telephony — IP Telephony
- keep your hair on! — keep calm
- keep your shirt on — refrain from losing your temper (often used as an exhortation to another)
- lipopolysaccharide — any of a class of polysaccharides to which lipids are attached.
- lone-parent family — a family in which there is only one parent
- lyophilized powder — Lyophilized powder is a freeze-dried powder.
- market opportunity — a situation in which a company can meet an unsatisfied customer need before its competitors
- maternity hospital — birthing facility
- may flower compact — an agreement to establish a government, entered into by the Pilgrims in the cabin of the Mayflower on November 11, 1620.
- mercury-vapor lamp — a lamp producing a light with a high actinic and ultraviolet content by means of an electric arc in mercury vapor.
- methylprednisolone — A synthetic glucocorticoid drug, with chemical formula C22H30O5.
- micropalaeontology — the branch of palaeontology concerned with the study of microscopic fossils
- military policeman — A military policeman is a member of the military police.
- minority president — (in the US) a president who has been elected by the largest number of votes cast but not by a majority of the electorate
- minority programme — a programme that appeals to a minority of the available audience
- money for old rope — If you describe a payment as money for old rope, you are emphasizing that it is earned very easily, for very little effort.
- monochlorobiphenyl — (organic compound) Either of three isomers of a chlorinated derivative of biphenyl containing one chlorine atom.
- monophosphorylated — (biochemistry) phosphorylated with a single unit of phosphoric acid.
- mucopolysaccharide — (formerly) glycosaminoglycan.
- myeloproliferative — (medicine) of or pertaining to the presence of an abnormal proliferation of myelopoietic cells (from bone marrow).
- 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.
- 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.
- 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.