12-letter words containing h, o, a
- haematoxylon — any thorny leguminous tree of the genus Haematoxylon, esp the logwood, of tropical America and SW Africa. The heartwood yields the dye haematoxylin
- haemodynamic — Alternative spelling of hemodynamic.
- haemogenesis — Haematopoiesis.
- haemophiliac — A person with haemophilia.
- haemoprotein — Alternative spelling of hemoprotein.
- haemorrhages — Plural form of haemorrhage.
- haemorrhagic — (chiefly, British) alternative spelling of hemorrhagic.
- haemorrhoids — Plural form of haemorrhoid.
- haemosiderin — Alternative form of hemosiderin.
- hagia sophia — flourished 6th century a.d, Byzantine engineer. He was one of the architects of Hagia Sophia; (originally an Orthodox cathedral and currently a museum in Istanbul, Turkey).
- hagiocracies — Plural form of hagiocracy.
- hagiographer — one of the writers of the Hagiographa.
- hagiographic — Of or pertaining to hagiography.
- hagiological — Relating to hagiology.
- hair removal — depilatory treatment
- hair remover — depilatory cream
- haircoloring — dye or tint for the hair.
- haji-ioannou — Sir Stelios. born 1967, British businessman, born in Greece; founder (1995) and chairman (until 2002) of the low-cost airline company Easyjet
- halcyon days — period regarded with nostalgia
- half a dozen — six
- half an hour — 30 minutes
- half brother — brother (def 2).
- half holiday — a holiday limited to half a working day or half an academic day.
- half section — a part that is cut off or separated.
- half serious — of, showing, or characterized by deep thought.
- half-blooded — having parents of two different breeds, species, or the like.
- half-brother — brother (def 2).
- half-covered — to be or serve as a covering for; extend over; rest on the surface of: Snow covered the fields.
- half-drowned — to die under water or other liquid of suffocation.
- half-forward — any of three forwards positioned between the centre line and the forward line
- half-holiday — a holiday limited to half a working day or half an academic day.
- half-monthly — pertaining to a month, or to each month.
- half-section — a part that is cut off or separated.
- half-serious — of, showing, or characterized by deep thought.
- haliplankton — plankton living in sea water
- hall bedroom — a small bedroom off a corridor, esp. a small bedroom formed by partitioning off the end of an upstairs corridor
- hall of fame — a national shrine in New York City commemorating the names of outstanding Americans.
- hall process — a process in which aluminum is refined by electrolytic reduction of alumina fused with cryolite.
- halls of ivy — an institution of higher learning; university or college; the academic world.
- hallucinator — One whose judgment and acts are affected by hallucinations; one who errs on account of his hallucinations.
- hallucinogen — a substance that produces hallucinations.
- hallucinosis — a mental state characterized by repeated hallucinations.
- halobacteria — Plural form of halobacterium.
- halogen lamp — a gas-filled, high-intensity incandescent lamp having a tungsten filament and containing a small amount of a halogen, such as iodine, that vaporizes on heating and redeposits any evaporated tungsten particles back onto the filament: used especially in motion-picture projectors and automobile headlights.
- 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