10-letter words containing h, a, c, i, o
- geocaching — the outdoor sport or game of searching for hidden objects by using Global Positioning System (GPS) coordinates posted on the Internet.
- geographic — of or relating to geography.
- gothically — In a gothic way.
- haciendado — hacendado.
- hackintosh — 1. (jargon, computer) An Apple Lisa that has been hacked into emulating a Macintosh (also called a "Mac XL"). 2. (jargon, computer) A Macintosh assembled from parts theoretically belonging to different models in the line.
- haemoconia — the small particles of matter, thought to be particles of the structure of red blood cells, that are present in blood that is flowing around the body
- haemolytic — of or relating to the disintegration of red blood cells
- haemotoxic — destructive to red blood cells
- hagiocracy — government by a body of persons esteemed as holy.
- hagiologic — Synonym of hagiological.
- hagioscope — squint (def 13).
- halcyonian — calm; peaceful; tranquil: halcyon weather.
- halobiotic — relating to habitation in the sea
- haloclines — Plural form of halocline.
- halophilic — any organism, as certain halobacteria and marine bacteria, that requires a salt-rich environment for its growth and survival.
- halophytic — Growing well under salty conditions.
- happi coat — a Japanese lounging jacket with wide, loose sleeves and often an overlapping front closure usually tied with a sash.
- harmonical — Alternative form of harmonic.
- harmonicas — Plural form of harmonica.
- harmonicon — harmonica (def 1).
- harpsicord — Dated form of harpsichord.
- head voice — the high register of the human voice, in which the vibrations of sung notes are felt in the head
- helicoidal — coiled or curving like a spiral.
- hellacious — remarkable; astonishing: They're raising a hellacious amount of money in taxes.
- hematocrit — a centrifuge for separating the cells of the blood from the plasma.
- hemianopic — having or relating to hemianopia
- hemocyanin — a blue, copper-containing respiratory pigment in the plasma of many invertebrates.
- hemostatic — arresting hemorrhage, as a drug; styptic.
- heptapodic — having seven metrical feet
- heptatonic — (of a musical scale) comprising seven notes
- heroic age — one of the five periods in human history, when, according to Hesiod, gods and demigods performed heroic and glorious deeds.
- heroically — Also, heroical. of, relating to, or characteristic of a hero or heroine.
- hierocracy — rule or government by priests or ecclesiastics.
- hieromancy — divination through studying objects offered in sacrifice
- hippocampi — Classical Mythology. a sea horse with two forefeet, and a body ending in the tail of a dolphin or fish.
- historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- holocarpic — (of a fungus) having the entire thallus converted into fruiting bodies.
- homorganic — (of two or more speech sounds) having the same place of articulation, as p, b, and m, which are all bilabial.
- homosocial — Pertaining to homosociality, to social interaction with the same sex.
- hopsacking — bagging made chiefly of hemp and jute.
- horn chair — a chair, especially of the late 19th-century U.S., having a frame made from steer, elk, buffalo, or other animal horns.
- horrifical — Of or pertaining to horror.
- housatonic — a river flowing S from NW Massachusetts through SW Connecticut to Long Island Sound near Stratford, Connecticut. 148 miles (240 km) long.
- hyaluronic — Of or pertaining to hyaluronic acid or its derivatives.
- hylozoical — characterized by the theory that all matter possesses life or that life is an essential property of matter
- hypnagogic — of or relating to drowsiness.
- hypoactive — Less than normally active.
- hypocapnia — (medicine) A state of reduced carbon dioxide in the blood.
- hypostatic — of or relating to a hypostasis; fundamental.
- hypotactic — dependent relation or construction, as of clauses; syntactic subordination.