13-letter words containing t, h, y, o
- goodheartedly — In a goodhearted manner.
- grandmotherly — of or characteristic of a grandmother.
- grey-thompson — Tanni (Carys Davina) Baroness. born 1969, Welsh wheelchair athlete; won eleven gold medals for Britain in wheelchair racing in the Paralympic Games (1988–2004); a crossbench peer in the House of Lords since 2010
- group therapy — psychotherapy in which a number of patients discuss their problems together, usually under the leadership of a therapist, using shared knowledge and experiences to provide constructive feedback about maladaptive behavior.
- hallucinatory — pertaining to or characterized by hallucination: hallucinatory visions.
- harry hotspur — the nickname of Sir Henry Percy
- heartbrokenly — In a heartbroken manner.
- helen of troy — Also called Helen of Troy. Classical Mythology. the beautiful daughter of Zeus and Leda and wife of Menelaus whose abduction by Paris was the cause of the Trojan War.
- 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.
- hepatobiliary — Of, pertaining to, or originating in the liver, bile ducts and gallbladder.
- hermaphrodyte — (archaic) alternative spelling of hermaphrodite.
- heterocystous — containing or relating to heterocysts
- heterogeneity — the quality or state of being heterogeneous; composition from dissimilar parts; disparateness.
- heterostrophy — the condition of being heterostrophic
- heterostylism — the condition of being heterostyled
- heterozygosis — the state of being a heterozygote.
- heterozygotes — a hybrid containing genes for two unlike forms of a characteristic, and therefore not breeding true to type.
- heterozygotic — having dissimilar pairs of genes for any hereditary characteristic.
- hexadactylous — hexadactylic
- hieroglyphist — a person who studies hieroglyphics; hieroglyphologist.
- high-velocity — having an above average velocity
- hippo zarytus — ancient name of Bizerte.
- histiocytosis — (medicine) An excess of histiocytes, associated with various rare diseases.
- histodialysis — histolysis.
- holy saturday — the Saturday in Holy Week.
- holy thursday — Ascension Day.
- homiletically — In a homiletic fashion.
- 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.
- honor society — (in a college, university, or secondary school) a student society that admits members on the basis of academic merit and, sometimes, worthwhile contributions in extracurricular activities.
- honourability — A state or condition or being honourable.
- horizontality — at right angles to the vertical; parallel to level ground.
- hormic theory — a theory that holds all behavior to be purposive, whether conscious or unconscious.
- hospitability — The quality of being hospitable.
- hot and heavy — having or giving off heat; having a high temperature: a hot fire; hot coffee.
- hyalinization — a condition in which normal tissue deteriorates into a homogeneous, translucent material.
- hybridisation — Alternative form of hybridization.
- hybridization — to cause to produce hybrids; cross.
- hydrarthrosis — a build-up of fluid or water in the cavity of a joint, esp the knee joint
- hydroboration — (chemistry) the production or organoboranes by the addition of diborane to unsaturated organic compounds.
- hydroelectric — pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source.
- hydrofracture — (geology) Rock fracture caused by the pressure of freezing water.
- hydrogenating — Present participle of hydrogenate.
- hydrogenation — to combine or treat with hydrogen, especially to add hydrogen to the molecule of (an unsaturated organic compound).
- hydrokinetics — the branch of hydrodynamics that deals with the laws governing liquids or gases in motion.