12-letter words containing o, a, t, h
- genethliacon — A birthday ode.
- geotechnical — of or relating to practical applications of geological science in civil engineering, mining, etc.
- geothermally — By geothermal means, especially by means of geothermal energy.
- get ahead of — to outdo or excel
- get ahold of — to get in touch with
- ghost estate — (esp in Ireland) a housing estate built during an economic boom but unfinished or unoccupied during a recession
- giant hornet — any large, stinging paper wasp of the family Vespidae, as Vespa crabro (giant hornet) introduced into the U.S. from Europe, or Vespula maculata (bald-faced hornet or white-faced hornet) of North America.
- gigantomachy — (in Greek mythology) the struggle between the gods and the giants.
- glatt kosher — prepared for eating according to the dietary laws followed by Hasidic Jews, which differ somewhat from those followed by other observers of kashruth: glatt kosher meat.
- glyptography — the description or study of engraved gems or other stones.
- gnathostomes — Plural form of gnathostome.
- go hard with — to cause pain or difficulty to (someone)
- goddaughters — Plural form of goddaughter.
- gold therapy — administration of gold salts as a treatment for disease, especially rheumatoid arthritis.
- goliath frog — the largest living frog, Rana goliath, which occurs in the Congo region of Africa and can grow to a length of 30 centimetres
- good-hearted — kind or generous; considerate; benevolent.
- gopher state — Minnesota (used as a nickname).
- gothic armor — white armor of the 15th century, marked especially by much fluting and ornamentation.
- grain growth — a tendency of certain grains to grow and absorb others when heated under certain conditions.
- gramophonist — a person who uses a gramophone
- grandmothers — Plural form of grandmother.
- graph theory — the branch of mathematics dealing with linear graphs.
- graphologist — the study of handwriting, especially when regarded as an expression of the writer's character, personality, abilities, etc.
- grapple shot — a grapnellike projectile fired from a gun and used as a hold for the end of a line in rescue operations or in kedging.
- gynantherous — having the stamens converted into pistils by the action of frost, disease, or insects.
- habilitation — to clothe or dress.
- habitational — a place of residence; dwelling; abode.
- hack to bits — to damage severely
- haematoblast — any of the undifferentiated cells in the bone marrow that develop into blood cells
- haematolyses — Plural form of haematolysis.
- haematolysis — Haemolysis.
- haematoxylin — Alternative spelling of hematoxylin.
- haematoxylon — any thorny leguminous tree of the genus Haematoxylon, esp the logwood, of tropical America and SW Africa. The heartwood yields the dye haematoxylin
- haemoprotein — Alternative spelling of hemoprotein.
- half brother — brother (def 2).
- half section — a part that is cut off or separated.
- half-brother — brother (def 2).
- half-monthly — pertaining to a month, or to each month.
- half-section — a part that is cut off or separated.
- haliplankton — plankton living in sea water
- hallucinator — One whose judgment and acts are affected by hallucinations; one who errs on account of his hallucinations.
- halobacteria — Plural form of halobacterium.
- halogenating — Present participle of halogenate.
- halogenation — (chemistry) The reaction of a halogen with something, especially the replacement of a hydrogen atom of an organic compound with a halogen one.
- halotolerant — (biology) Able to tolerate a high concentration of salt in its environment.
- halotrichite — a mineral, iron alum, isomorphous with pickeringite, occurring in the form of yellowish fibers.
- halton hills — a city in SE Ontario, in S Canada, near Toronto.
- hamartiology — the doctrine of sin in Christian theology
- hambletonian — one of a superior strain of American trotting horses descended from the stallion Hambletonian.
- hammer throw — a field event in which the hammer is thrown for distance.