13-letter words containing m, y
- helicoid cyme — an inflorescence, or cyme, in which each flowering branch gives rise to one lateral branch that is coiled snail-like and then expanded.
- helminthology — the scientific study of worms, especially of parasitic worms.
- hemacytometer — hemocytometer.
- hemicolectomy — (surgery) A colectomy involving the removal of only the ascending (right) colon or the descending (left) colon.
- hemocytoblast — a primordial cell capable of developing into any type of blood cell.
- hemocytometer — an instrument for counting blood cells.
- hemolymphatic — a fluid in the body cavities and tissues of invertebrates, in arthropods functioning as blood and in some other invertebrates functioning as lymph.
- hemp agrimony — a European composite plant, Eupatorium cannabinum, having dull purplish flowers.
- herbal remedy — a medical treatment made with herbs
- herd immunity — the immunity or resistance to a particular infection that occurs in a group of people or animals when a very high percentage of individuals have been vaccinated or previously exposed to the infection.
- hermaphrodyte — (archaic) alternative spelling of hermaphrodite.
- heterostylism — the condition of being heterostyled
- hexadactylism — Sexdactyly.
- hexamethylene — cyclohexane.
- holiday-maker — vacationer.
- holidaymakers — Plural form of holidaymaker.
- holy mackerel — astonishment
- home assembly — assembly at home of something supplied in pieces
- home delivery — delivery to one's home
- home row keys — home keys
- homiletically — In a homiletic fashion.
- homogeneously — composed of parts or elements that are all of the same kind; not heterogeneous: a homogeneous population.
- homopolymeric — relating to or made of homopolymers
- homosexuality — sexual desire or behavior directed toward a person or persons of one's own sex.
- honey stomach — the crop of an ant, bee, or other hymenopterous insect, serving as a reservoir for honeydew and nectar, especially the enlarged crop of a honeybee in which nectar is acted on by enzymes to form honey.
- hormic theory — a theory that holds all behavior to be purposive, whether conscious or unconscious.
- howler monkey — Central American simian variety
- human ecology — ecology (def 4).
- humiliatingly — lowering the pride, self-respect, or dignity of a person; mortifying: Such a humiliating defeat was good for his overblown ego.
- humpty dumpty — an egg-shaped character in a Mother Goose nursery rhyme that fell off a wall and could not be put together again.
- humpty-dumpty — an egg-shaped character in a Mother Goose nursery rhyme that fell off a wall and could not be put together again.
- hybrid system — a way of working, organizing, or doing something that is composed of elements of two separate systems
- hydrated lime — a soft, white, crystalline, very slightly water-soluble powder, Ca(OH) 2 , obtained by the action of water on lime: used chiefly in mortars, plasters, and cements.
- hydraulic ram — a device by which the energy of descending water is utilized to raise a part of the water to a height greater than that of the source.
- hydrodynamics — the branch of fluid dynamics that deals with liquids, including hydrostatics and hydrokinetics.
- hydrogen bomb — a bomb, more powerful than an atomic bomb, that derives its explosive energy from the thermonuclear fusion reaction of hydrogen isotopes.
- hydromedusoid — a jellyfish or something resembling a jellyfish that lives in water
- hydromorphone — A synthetic narcotic analgesic, (4,5 alpha-epoxy-3-hydroxy-17-methyl morphinan-6-one), similar to morphine and heroin. It is used for moderate to severe pain under the trade name Dilaudid.
- hydronium ion — the hydrogen ion bonded to a molecule of water, H 3 O + , the form in which hydrogen ions are found in aqueous solution.
- hydroxylamine — an unstable, weakly basic, crystalline compound, NH 3 O, used as a reducing agent, analytical reagent, and chemical intermediate.
- hydroxymethyl — (organic chemistry, especially in combination) The univalent radical HO-CH2-.
- hygrometrical — Alternative form of hygrometric.
- hymenopterans — Plural form of hymenopteran.
- hymenopterous — belonging or pertaining to the Hymenoptera, an order of insects having, when winged, four membranous wings, and comprising the wasps, bees, ants, ichneumon flies, and sawflies.
- hymenorrhaphy — (medicine) Reconstructive surgery in which a woman's hymen is restored to the unbroken condition ordinarily characteristic of virginity.
- hymnal stanza — common measure (def 2).
- hymnal-stanza — common time.
- hyper-realism — interest in or concern for the actual or real, as distinguished from the abstract, speculative, etc.
- hypercalcemia — an abnormally large amount of calcium in the blood.
- hyperglycemia — an abnormally high level of glucose in the blood.