12-letter words containing a, l, h, o, t
- focal length — the distance from a focal point of a lens or mirror to the corresponding principal plane. Symbol: f.
- foolhardiest — Superlative form of foolhardy.
- for all that — the whole of (used in referring to quantity, extent, or duration): all the cake; all the way; all year.
- fourth-class — of, relating to, or designated as a class next below third, as for mailing, shipping, etc.
- galactophore — a galactophorous duct.
- galactorrhea — an abnormally abundant flow of milk in a lactating woman.
- galanty show — pantomime shadow play
- 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 ahold of — to get in touch with
- 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.
- 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
- 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.
- habilitation — to clothe or dress.
- habitational — a place of residence; dwelling; abode.
- 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
- 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.
- haptoglobins — Plural form of haptoglobin.
- harold stark — Harold Raynsford [reynz-ferd] /ˈreɪnz fərd/ (Show IPA), 1880–1972, U.S. admiral.
- hazelnut oil — an oil extracted from hazelnuts and used mostly in cooking
- headstrongly — In a headstrong manner.
- heel-and-toe — noting a pace, as in walking contests, in which the heel of the front foot touches ground before the toes of the rear one leave it.
- helicobacter — Any member of the Helicobacter bacteria.
- heliotherapy — treatment of disease by means of sunlight.
- hello packet — (networking, communications) An OSPF packet sent periodically on each network interface, real or virtual, to discover and test connections to neighbours. Hello packets are multicast on physical networks capable of multicasting or broadcasting to enable dynamic router discovery. They include the parameters that routers connected to a common network must agree on. Hello packets increase network resilience by, e.g., allowing a router to establish a secondary connection when a primary connection fails.
- hematoblasts — Plural form of hematoblast.
- hematocolpos — (medicine) A medical condition in which the vagina fills with menstrual blood, often caused by the combination of menstruation with an imperforate hymen.
- hematologist — the study of the nature, function, and diseases of the blood and of blood-forming organs.